diff options
Diffstat (limited to 'source3/passdb/pdb_smbpasswd.c')
| -rw-r--r-- | source3/passdb/pdb_smbpasswd.c | 1660 |
1 files changed, 1660 insertions, 0 deletions
diff --git a/source3/passdb/pdb_smbpasswd.c b/source3/passdb/pdb_smbpasswd.c new file mode 100644 index 0000000000..89a4217c3b --- /dev/null +++ b/source3/passdb/pdb_smbpasswd.c @@ -0,0 +1,1660 @@ +/* + * Unix SMB/CIFS implementation. + * SMB parameters and setup + * Copyright (C) Andrew Tridgell 1992-1998 + * Modified by Jeremy Allison 1995. + * Modified by Gerald (Jerry) Carter 2000-2001 + * Modified by Andrew Bartlett 2002. + * + * This program is free software; you can redistribute it and/or modify it under + * the terms of the GNU General Public License as published by the Free + * Software Foundation; either version 2 of the License, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; if not, write to the Free Software Foundation, Inc., 675 + * Mass Ave, Cambridge, MA 02139, USA. + */ + +#include "includes.h" + + +/* + smb_passwd is analogous to sam_passwd used everywhere + else. However, smb_passwd is limited to the information + stored by an smbpasswd entry + */ + +struct smb_passwd +{ + BOOL smb_userid_set; /* this is actually the unix uid_t */ + uint32 smb_userid; /* this is actually the unix uid_t */ + const char *smb_name; /* username string */ + + const unsigned char *smb_passwd; /* Null if no password */ + const unsigned char *smb_nt_passwd; /* Null if no password */ + + uint16 acct_ctrl; /* account info (ACB_xxxx bit-mask) */ + time_t pass_last_set_time; /* password last set time */ +}; + +struct smbpasswd_privates +{ + /* used for maintain locks on the smbpasswd file */ + int pw_file_lock_depth; + + /* Global File pointer */ + FILE *pw_file; + + /* formerly static variables */ + struct smb_passwd pw_buf; + pstring user_name; + unsigned char smbpwd[16]; + unsigned char smbntpwd[16]; + + /* retrive-once info */ + const char *smbpasswd_file; + + BOOL permit_non_unix_accounts; + + uint32 low_nua_userid; + uint32 high_nua_userid; + +}; + +enum pwf_access_type { PWF_READ, PWF_UPDATE, PWF_CREATE }; + +/******************************************************************* + Converts NT user RID to a UNIX uid. + ********************************************************************/ + +static uid_t pdb_user_rid_to_uid(uint32 user_rid) +{ + return (uid_t)(((user_rid & (~USER_RID_TYPE))- 1000)/RID_MULTIPLIER); +} + +/******************************************************************* + converts UNIX uid to an NT User RID. + ********************************************************************/ + +static uint32 pdb_uid_to_user_rid(uid_t uid) +{ + return (((((uint32)uid)*RID_MULTIPLIER) + 1000) | USER_RID_TYPE); +} + +/*************************************************************** + Lock an fd. Abandon after waitsecs seconds. +****************************************************************/ + +static BOOL pw_file_lock(int fd, int type, int secs, int *plock_depth) +{ + if (fd < 0) + return False; + + if(*plock_depth == 0) { + if (!do_file_lock(fd, secs, type)) { + DEBUG(10,("pw_file_lock: locking file failed, error = %s.\n", + strerror(errno))); + return False; + } + } + + (*plock_depth)++; + + return True; +} + +/*************************************************************** + Unlock an fd. Abandon after waitsecs seconds. +****************************************************************/ + +static BOOL pw_file_unlock(int fd, int *plock_depth) +{ + BOOL ret=True; + + if(*plock_depth == 1) + ret = do_file_lock(fd, 5, F_UNLCK); + + if (*plock_depth > 0) + (*plock_depth)--; + + if(!ret) + DEBUG(10,("pw_file_unlock: unlocking file failed, error = %s.\n", + strerror(errno))); + return ret; +} + + +/************************************************************** + Intialize a smb_passwd struct + *************************************************************/ + +static void pdb_init_smb(struct smb_passwd *user) +{ + if (user == NULL) + return; + ZERO_STRUCTP (user); + + user->pass_last_set_time = (time_t)0; +} + +/*************************************************************** + Internal fn to enumerate the smbpasswd list. Returns a void pointer + to ensure no modification outside this module. Checks for atomic + rename of smbpasswd file on update or create once the lock has + been granted to prevent race conditions. JRA. +****************************************************************/ + +static FILE *startsmbfilepwent(const char *pfile, enum pwf_access_type type, int *lock_depth) +{ + FILE *fp = NULL; + const char *open_mode = NULL; + int race_loop = 0; + int lock_type = F_RDLCK; + + if (!*pfile) { + DEBUG(0, ("startsmbfilepwent: No SMB password file set\n")); + return (NULL); + } + + switch(type) { + case PWF_READ: + open_mode = "rb"; + lock_type = F_RDLCK; + break; + case PWF_UPDATE: + open_mode = "r+b"; + lock_type = F_WRLCK; + break; + case PWF_CREATE: + /* + * Ensure atomic file creation. + */ + { + int i, fd = -1; + + for(i = 0; i < 5; i++) { + if((fd = sys_open(pfile, O_CREAT|O_TRUNC|O_EXCL|O_RDWR, 0600))!=-1) + break; + sys_usleep(200); /* Spin, spin... */ + } + if(fd == -1) { + DEBUG(0,("startsmbfilepwent_internal: too many race conditions creating file %s\n", pfile)); + return NULL; + } + close(fd); + open_mode = "r+b"; + lock_type = F_WRLCK; + break; + } + } + + for(race_loop = 0; race_loop < 5; race_loop++) { + DEBUG(10, ("startsmbfilepwent_internal: opening file %s\n", pfile)); + + if((fp = sys_fopen(pfile, open_mode)) == NULL) { + DEBUG(2, ("startsmbfilepwent_internal: unable to open file %s. Error was %s\n", pfile, strerror(errno) )); + return NULL; + } + + if (!pw_file_lock(fileno(fp), lock_type, 5, lock_depth)) { + DEBUG(0, ("startsmbfilepwent_internal: unable to lock file %s. Error was %s\n", pfile, strerror(errno) )); + fclose(fp); + return NULL; + } + + /* + * Only check for replacement races on update or create. + * For read we don't mind if the data is one record out of date. + */ + + if(type == PWF_READ) { + break; + } else { + SMB_STRUCT_STAT sbuf1, sbuf2; + + /* + * Avoid the potential race condition between the open and the lock + * by doing a stat on the filename and an fstat on the fd. If the + * two inodes differ then someone did a rename between the open and + * the lock. Back off and try the open again. Only do this 5 times to + * prevent infinate loops. JRA. + */ + + if (sys_stat(pfile,&sbuf1) != 0) { + DEBUG(0, ("startsmbfilepwent_internal: unable to stat file %s. Error was %s\n", pfile, strerror(errno))); + pw_file_unlock(fileno(fp), lock_depth); + fclose(fp); + return NULL; + } + + if (sys_fstat(fileno(fp),&sbuf2) != 0) { + DEBUG(0, ("startsmbfilepwent_internal: unable to fstat file %s. Error was %s\n", pfile, strerror(errno))); + pw_file_unlock(fileno(fp), lock_depth); + fclose(fp); + return NULL; + } + + if( sbuf1.st_ino == sbuf2.st_ino) { + /* No race. */ + break; + } + + /* + * Race occurred - back off and try again... + */ + + pw_file_unlock(fileno(fp), lock_depth); + fclose(fp); + } + } + + if(race_loop == 5) { + DEBUG(0, ("startsmbfilepwent_internal: too many race conditions opening file %s\n", pfile)); + return NULL; + } + + /* Set a buffer to do more efficient reads */ + setvbuf(fp, (char *)NULL, _IOFBF, 1024); + + /* Make sure it is only rw by the owner */ + if(fchmod(fileno(fp), S_IRUSR|S_IWUSR) == -1) { + DEBUG(0, ("startsmbfilepwent_internal: failed to set 0600 permissions on password file %s. \ +Error was %s\n.", pfile, strerror(errno) )); + pw_file_unlock(fileno(fp), lock_depth); + fclose(fp); + return NULL; + } + + /* We have a lock on the file. */ + return fp; +} + +/*************************************************************** + End enumeration of the smbpasswd list. +****************************************************************/ +static void endsmbfilepwent(FILE *fp, int *lock_depth) +{ + + pw_file_unlock(fileno(fp), lock_depth); + fclose(fp); + DEBUG(7, ("endsmbfilepwent_internal: closed password file.\n")); +} + +/************************************************************************* + Routine to return the next entry in the smbpasswd list. + *************************************************************************/ + +static struct smb_passwd *getsmbfilepwent(struct smbpasswd_privates *smbpasswd_state, FILE *fp) +{ + /* Static buffers we will return. */ + struct smb_passwd *pw_buf = &smbpasswd_state->pw_buf; + char *user_name = smbpasswd_state->user_name; + unsigned char *smbpwd = smbpasswd_state->smbpwd; + unsigned char *smbntpwd = smbpasswd_state->smbntpwd; + char linebuf[256]; + unsigned char c; + unsigned char *p; + long uidval; + size_t linebuf_len; + + if(fp == NULL) { + DEBUG(0,("getsmbfilepwent: Bad password file pointer.\n")); + return NULL; + } + + pdb_init_smb(pw_buf); + + pw_buf->acct_ctrl = ACB_NORMAL; + + /* + * Scan the file, a line at a time and check if the name matches. + */ + while (!feof(fp)) { + linebuf[0] = '\0'; + + fgets(linebuf, 256, fp); + if (ferror(fp)) { + return NULL; + } + + /* + * Check if the string is terminated with a newline - if not + * then we must keep reading and discard until we get one. + */ + if ((linebuf_len = strlen(linebuf)) == 0) + continue; + + if (linebuf[linebuf_len - 1] != '\n') { + c = '\0'; + while (!ferror(fp) && !feof(fp)) { + c = fgetc(fp); + if (c == '\n') + break; + } + } else + linebuf[linebuf_len - 1] = '\0'; + +#ifdef DEBUG_PASSWORD + DEBUG(100, ("getsmbfilepwent: got line |%s|\n", linebuf)); +#endif + if ((linebuf[0] == 0) && feof(fp)) { + DEBUG(4, ("getsmbfilepwent: end of file reached\n")); + break; + } + /* + * The line we have should be of the form :- + * + * username:uid:32hex bytes:[Account type]:LCT-12345678....other flags presently + * ignored.... + * + * or, + * + * username:uid:32hex bytes:32hex bytes:[Account type]:LCT-12345678....ignored.... + * + * if Windows NT compatible passwords are also present. + * [Account type] is an ascii encoding of the type of account. + * LCT-(8 hex digits) is the time_t value of the last change time. + */ + + if (linebuf[0] == '#' || linebuf[0] == '\0') { + DEBUG(6, ("getsmbfilepwent: skipping comment or blank line\n")); + continue; + } + p = (unsigned char *) strchr_m(linebuf, ':'); + if (p == NULL) { + DEBUG(0, ("getsmbfilepwent: malformed password entry (no :)\n")); + continue; + } + /* + * As 256 is shorter than a pstring we don't need to check + * length here - if this ever changes.... + */ + strncpy(user_name, linebuf, PTR_DIFF(p, linebuf)); + user_name[PTR_DIFF(p, linebuf)] = '\0'; + + /* Get smb uid. */ + + p++; /* Go past ':' */ + + if(*p == '-') { + DEBUG(0, ("getsmbfilepwent: uids in the smbpasswd file must not be negative.\n")); + continue; + } + + if (!isdigit(*p)) { + DEBUG(0, ("getsmbfilepwent: malformed password entry (uid not number)\n")); + continue; + } + + uidval = atoi((char *) p); + + while (*p && isdigit(*p)) + p++; + + if (*p != ':') { + DEBUG(0, ("getsmbfilepwent: malformed password entry (no : after uid)\n")); + continue; + } + + pw_buf->smb_name = user_name; + pw_buf->smb_userid = uidval; + + /* + * Now get the password value - this should be 32 hex digits + * which are the ascii representations of a 16 byte string. + * Get two at a time and put them into the password. + */ + + /* Skip the ':' */ + p++; + + if (*p == '*' || *p == 'X') { + /* Password deliberately invalid - end here. */ + DEBUG(10, ("getsmbfilepwent: entry invalidated for user %s\n", user_name)); + pw_buf->smb_nt_passwd = NULL; + pw_buf->smb_passwd = NULL; + pw_buf->acct_ctrl |= ACB_DISABLED; + return pw_buf; + } + + if (linebuf_len < (PTR_DIFF(p, linebuf) + 33)) { + DEBUG(0, ("getsmbfilepwent: malformed password entry (passwd too short)\n")); + continue; + } + + if (p[32] != ':') { + DEBUG(0, ("getsmbfilepwent: malformed password entry (no terminating :)\n")); + continue; + } + + if (!strncasecmp((char *) p, "NO PASSWORD", 11)) { + pw_buf->smb_passwd = NULL; + pw_buf->acct_ctrl |= ACB_PWNOTREQ; + } else { + if (!pdb_gethexpwd((char *)p, smbpwd)) { + DEBUG(0, ("getsmbfilepwent: Malformed Lanman password entry (non hex chars)\n")); + continue; + } + pw_buf->smb_passwd = smbpwd; + } + + /* + * Now check if the NT compatible password is + * available. + */ + pw_buf->smb_nt_passwd = NULL; + + p += 33; /* Move to the first character of the line after + the lanman password. */ + if ((linebuf_len >= (PTR_DIFF(p, linebuf) + 33)) && (p[32] == ':')) { + if (*p != '*' && *p != 'X') { + if(pdb_gethexpwd((char *)p,smbntpwd)) + pw_buf->smb_nt_passwd = smbntpwd; + } + p += 33; /* Move to the first character of the line after + the NT password. */ + } + + DEBUG(5,("getsmbfilepwent: returning passwd entry for user %s, uid %ld\n", + user_name, uidval)); + + if (*p == '[') + { + unsigned char *end_p = (unsigned char *)strchr_m((char *)p, ']'); + pw_buf->acct_ctrl = pdb_decode_acct_ctrl((char*)p); + + /* Must have some account type set. */ + if(pw_buf->acct_ctrl == 0) + pw_buf->acct_ctrl = ACB_NORMAL; + + /* Now try and get the last change time. */ + if(end_p) + p = end_p + 1; + if(*p == ':') { + p++; + if(*p && (StrnCaseCmp((char *)p, "LCT-", 4)==0)) { + int i; + p += 4; + for(i = 0; i < 8; i++) { + if(p[i] == '\0' || !isxdigit(p[i])) + break; + } + if(i == 8) { + /* + * p points at 8 characters of hex digits - + * read into a time_t as the seconds since + * 1970 that the password was last changed. + */ + pw_buf->pass_last_set_time = (time_t)strtol((char *)p, NULL, 16); + } + } + } + } else { + /* 'Old' style file. Fake up based on user name. */ + /* + * Currently trust accounts are kept in the same + * password file as 'normal accounts'. If this changes + * we will have to fix this code. JRA. + */ + if(pw_buf->smb_name[strlen(pw_buf->smb_name) - 1] == '$') { + pw_buf->acct_ctrl &= ~ACB_NORMAL; + pw_buf->acct_ctrl |= ACB_WSTRUST; + } + } + + return pw_buf; + } + + DEBUG(5,("getsmbfilepwent: end of file reached.\n")); + return NULL; +} + +/************************************************************************ + Create a new smbpasswd entry - malloced space returned. +*************************************************************************/ + +static char *format_new_smbpasswd_entry(const struct smb_passwd *newpwd) +{ + int new_entry_length; + char *new_entry; + char *p; + int i; + + new_entry_length = strlen(newpwd->smb_name) + 1 + 15 + 1 + 32 + 1 + 32 + 1 + NEW_PW_FORMAT_SPACE_PADDED_LEN + 1 + 13 + 2; + + if((new_entry = (char *)malloc( new_entry_length )) == NULL) { + DEBUG(0, ("format_new_smbpasswd_entry: Malloc failed adding entry for user %s.\n", newpwd->smb_name )); + return NULL; + } + + slprintf(new_entry, new_entry_length - 1, "%s:%u:", newpwd->smb_name, (unsigned)newpwd->smb_userid); + p = &new_entry[strlen(new_entry)]; + + if(newpwd->smb_passwd != NULL) { + for( i = 0; i < 16; i++) { + slprintf((char *)&p[i*2], new_entry_length - (p - new_entry) - 1, "%02X", newpwd->smb_passwd[i]); + } + } else { + i=0; + if(newpwd->acct_ctrl & ACB_PWNOTREQ) + safe_strcpy((char *)p, "NO PASSWORDXXXXXXXXXXXXXXXXXXXXX", new_entry_length - 1 - (p - new_entry)); + else + safe_strcpy((char *)p, "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX", new_entry_length - 1 - (p - new_entry)); + } + + p += 32; + + *p++ = ':'; + + if(newpwd->smb_nt_passwd != NULL) { + for( i = 0; i < 16; i++) { + slprintf((char *)&p[i*2], new_entry_length - 1 - (p - new_entry), "%02X", newpwd->smb_nt_passwd[i]); + } + } else { + if(newpwd->acct_ctrl & ACB_PWNOTREQ) + safe_strcpy((char *)p, "NO PASSWORDXXXXXXXXXXXXXXXXXXXXX", new_entry_length - 1 - (p - new_entry)); + else + safe_strcpy((char *)p, "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX", new_entry_length - 1 - (p - new_entry)); + } + + p += 32; + + *p++ = ':'; + + /* Add the account encoding and the last change time. */ + slprintf((char *)p, new_entry_length - 1 - (p - new_entry), "%s:LCT-%08X:\n", + pdb_encode_acct_ctrl(newpwd->acct_ctrl, NEW_PW_FORMAT_SPACE_PADDED_LEN), + (uint32)newpwd->pass_last_set_time); + + return new_entry; +} + +/************************************************************************ + Routine to add an entry to the smbpasswd file. +*************************************************************************/ + +static BOOL add_smbfilepwd_entry(struct smbpasswd_privates *smbpasswd_state, struct smb_passwd *newpwd) +{ + const char *pfile = smbpasswd_state->smbpasswd_file; + struct smb_passwd *pwd = NULL; + FILE *fp = NULL; + int wr_len; + int fd; + size_t new_entry_length; + char *new_entry; + SMB_OFF_T offpos; + uint32 max_found_uid = 0; + + /* Open the smbpassword file - for update. */ + fp = startsmbfilepwent(pfile, PWF_UPDATE, &(smbpasswd_state->pw_file_lock_depth)); + + if (fp == NULL && errno == ENOENT) { + /* Try again - create. */ + fp = startsmbfilepwent(pfile, PWF_CREATE, &(smbpasswd_state->pw_file_lock_depth)); + } + + if (fp == NULL) { + DEBUG(0, ("add_smbfilepwd_entry: unable to open file.\n")); + return False; + } + + /* + * Scan the file, a line at a time and check if the name matches. + */ + + while ((pwd = getsmbfilepwent(smbpasswd_state, fp)) != NULL) + { + if (strequal(newpwd->smb_name, pwd->smb_name)) + { + DEBUG(0, ("add_smbfilepwd_entry: entry with name %s already exists\n", pwd->smb_name)); + endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth)); + return False; + } + + /* Look for a free uid for use in non-unix accounts */ + if (pwd->smb_userid > max_found_uid) { + max_found_uid = pwd->smb_userid; + } + } + + /* Ok - entry doesn't exist. We can add it */ + + /* Account not in /etc/passwd hack!!! */ + if (!newpwd->smb_userid_set) { + if (!smbpasswd_state->permit_non_unix_accounts) { + DEBUG(0, ("add_smbfilepwd_entry: cannot add account %s without unix identity\n", newpwd->smb_name)); + endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth)); + return False; + } + + if (max_found_uid < smbpasswd_state->low_nua_userid) { + newpwd->smb_userid = smbpasswd_state->low_nua_userid; + newpwd->smb_userid_set = True; + } else if (max_found_uid >= smbpasswd_state->high_nua_userid) { + DEBUG(0, ("add_smbfilepwd_entry: cannot add machine %s, no uids are free! \n", newpwd->smb_name)); + endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth)); + return False; + } else { + newpwd->smb_userid = max_found_uid + 1; + newpwd->smb_userid_set = True; + } + } + + + /* Create a new smb passwd entry and set it to the given password. */ + /* + * The add user write needs to be atomic - so get the fd from + * the fp and do a raw write() call. + */ + fd = fileno(fp); + + if((offpos = sys_lseek(fd, 0, SEEK_END)) == -1) + { + DEBUG(0, ("add_smbfilepwd_entry(sys_lseek): Failed to add entry for user %s to file %s. \ +Error was %s\n", newpwd->smb_name, pfile, strerror(errno))); + endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth)); + return False; + } + + if((new_entry = format_new_smbpasswd_entry(newpwd)) == NULL) + { + DEBUG(0, ("add_smbfilepwd_entry(malloc): Failed to add entry for user %s to file %s. \ +Error was %s\n", newpwd->smb_name, pfile, strerror(errno))); + endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth)); + return False; + } + + new_entry_length = strlen(new_entry); + +#ifdef DEBUG_PASSWORD + DEBUG(100, ("add_smbfilepwd_entry(%d): new_entry_len %d made line |%s|", + fd, new_entry_length, new_entry)); +#endif + + if ((wr_len = write(fd, new_entry, new_entry_length)) != new_entry_length) + { + DEBUG(0, ("add_smbfilepwd_entry(write): %d Failed to add entry for user %s to file %s. \ +Error was %s\n", wr_len, newpwd->smb_name, pfile, strerror(errno))); + + /* Remove the entry we just wrote. */ + if(sys_ftruncate(fd, offpos) == -1) + { + DEBUG(0, ("add_smbfilepwd_entry: ERROR failed to ftruncate file %s. \ +Error was %s. Password file may be corrupt ! Please examine by hand !\n", + newpwd->smb_name, strerror(errno))); + } + + endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth)); + free(new_entry); + return False; + } + + free(new_entry); + endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth)); + return True; +} + +/************************************************************************ + Routine to search the smbpasswd file for an entry matching the username. + and then modify its password entry. We can't use the startsmbpwent()/ + getsmbpwent()/endsmbpwent() interfaces here as we depend on looking + in the actual file to decide how much room we have to write data. + override = False, normal + override = True, override XXXXXXXX'd out password or NO PASS +************************************************************************/ + +static BOOL mod_smbfilepwd_entry(struct smbpasswd_privates *smbpasswd_state, const struct smb_passwd* pwd) +{ + /* Static buffers we will return. */ + char * user_name = smbpasswd_state->user_name; + + char linebuf[256]; + char readbuf[1024]; + unsigned char c; + fstring ascii_p16; + fstring encode_bits; + unsigned char *p = NULL; + size_t linebuf_len = 0; + FILE *fp; + int lockfd; + const char *pfile = smbpasswd_state->smbpasswd_file; + BOOL found_entry = False; + BOOL got_pass_last_set_time = False; + + SMB_OFF_T pwd_seekpos = 0; + + int i; + int wr_len; + int fd; + + if (!*pfile) { + DEBUG(0, ("No SMB password file set\n")); + return False; + } + DEBUG(10, ("mod_smbfilepwd_entry: opening file %s\n", pfile)); + + fp = sys_fopen(pfile, "r+"); + + if (fp == NULL) { + DEBUG(0, ("mod_smbfilepwd_entry: unable to open file %s\n", pfile)); + return False; + } + /* Set a buffer to do more efficient reads */ + setvbuf(fp, readbuf, _IOFBF, sizeof(readbuf)); + + lockfd = fileno(fp); + + if (!pw_file_lock(lockfd, F_WRLCK, 5, &(smbpasswd_state->pw_file_lock_depth))) { + DEBUG(0, ("mod_smbfilepwd_entry: unable to lock file %s\n", pfile)); + fclose(fp); + return False; + } + + /* Make sure it is only rw by the owner */ + chmod(pfile, 0600); + + /* We have a write lock on the file. */ + /* + * Scan the file, a line at a time and check if the name matches. + */ + while (!feof(fp)) { + pwd_seekpos = sys_ftell(fp); + + linebuf[0] = '\0'; + + fgets(linebuf, sizeof(linebuf), fp); + if (ferror(fp)) { + pw_file_unlock(lockfd, &(smbpasswd_state->pw_file_lock_depth)); + fclose(fp); + return False; + } + + /* + * Check if the string is terminated with a newline - if not + * then we must keep reading and discard until we get one. + */ + linebuf_len = strlen(linebuf); + if (linebuf[linebuf_len - 1] != '\n') { + c = '\0'; + while (!ferror(fp) && !feof(fp)) { + c = fgetc(fp); + if (c == '\n') { + break; + } + } + } else { + linebuf[linebuf_len - 1] = '\0'; + } + +#ifdef DEBUG_PASSWORD + DEBUG(100, ("mod_smbfilepwd_entry: got line |%s|\n", linebuf)); +#endif + + if ((linebuf[0] == 0) && feof(fp)) { + DEBUG(4, ("mod_smbfilepwd_entry: end of file reached\n")); + break; + } + + /* + * The line we have should be of the form :- + * + * username:uid:[32hex bytes]:....other flags presently + * ignored.... + * + * or, + * + * username:uid:[32hex bytes]:[32hex bytes]:[attributes]:LCT-XXXXXXXX:...ignored. + * + * if Windows NT compatible passwords are also present. + */ + + if (linebuf[0] == '#' || linebuf[0] == '\0') { + DEBUG(6, ("mod_smbfilepwd_entry: skipping comment or blank line\n")); + continue; + } + + p = (unsigned char *) strchr_m(linebuf, ':'); + + if (p == NULL) { + DEBUG(0, ("mod_smbfilepwd_entry: malformed password entry (no :)\n")); + continue; + } + + /* + * As 256 is shorter than a pstring we don't need to check + * length here - if this ever changes.... + */ + strncpy(user_name, linebuf, PTR_DIFF(p, linebuf)); + user_name[PTR_DIFF(p, linebuf)] = '\0'; + if (strequal(user_name, pwd->smb_name)) { + found_entry = True; + break; + } + } + + if (!found_entry) { + pw_file_unlock(lockfd, &(smbpasswd_state->pw_file_lock_depth)); + fclose(fp); + return False; + } + + DEBUG(6, ("mod_smbfilepwd_entry: entry exists\n")); + + /* User name matches - get uid and password */ + p++; /* Go past ':' */ + + if (!isdigit(*p)) { + DEBUG(0, ("mod_smbfilepwd_entry: malformed password entry (uid not number)\n")); + pw_file_unlock(lockfd, &(smbpasswd_state->pw_file_lock_depth)); + fclose(fp); + return False; + } + + while (*p && isdigit(*p)) + p++; + if (*p != ':') { + DEBUG(0, ("mod_smbfilepwd_entry: malformed password entry (no : after uid)\n")); + pw_file_unlock(lockfd, &(smbpasswd_state->pw_file_lock_depth)); + fclose(fp); + return False; + } + + /* + * Now get the password value - this should be 32 hex digits + * which are the ascii representations of a 16 byte string. + * Get two at a time and put them into the password. + */ + p++; + + /* Record exact password position */ + pwd_seekpos += PTR_DIFF(p, linebuf); + + if (linebuf_len < (PTR_DIFF(p, linebuf) + 33)) { + DEBUG(0, ("mod_smbfilepwd_entry: malformed password entry (passwd too short)\n")); + pw_file_unlock(lockfd,&(smbpasswd_state->pw_file_lock_depth)); + fclose(fp); + return (False); + } + + if (p[32] != ':') { + DEBUG(0, ("mod_smbfilepwd_entry: malformed password entry (no terminating :)\n")); + pw_file_unlock(lockfd,&(smbpasswd_state->pw_file_lock_depth)); + fclose(fp); + return False; + } + + /* Now check if the NT compatible password is + available. */ + p += 33; /* Move to the first character of the line after + the lanman password. */ + if (linebuf_len < (PTR_DIFF(p, linebuf) + 33)) { + DEBUG(0, ("mod_smbfilepwd_entry: malformed password entry (passwd too short)\n")); + pw_file_unlock(lockfd,&(smbpasswd_state->pw_file_lock_depth)); + fclose(fp); + return (False); + } + + if (p[32] != ':') { + DEBUG(0, ("mod_smbfilepwd_entry: malformed password entry (no terminating :)\n")); + pw_file_unlock(lockfd,&(smbpasswd_state->pw_file_lock_depth)); + fclose(fp); + return False; + } + + /* + * Now check if the account info and the password last + * change time is available. + */ + p += 33; /* Move to the first character of the line after + the NT password. */ + + if (*p == '[') { + + i = 0; + encode_bits[i++] = *p++; + while((linebuf_len > PTR_DIFF(p, linebuf)) && (*p != ']')) + encode_bits[i++] = *p++; + + encode_bits[i++] = ']'; + encode_bits[i++] = '\0'; + + if(i == NEW_PW_FORMAT_SPACE_PADDED_LEN) { + /* + * We are using a new format, space padded + * acct ctrl field. Encode the given acct ctrl + * bits into it. + */ + fstrcpy(encode_bits, pdb_encode_acct_ctrl(pwd->acct_ctrl, NEW_PW_FORMAT_SPACE_PADDED_LEN)); + } else { + DEBUG(0,("mod_smbfilepwd_entry: Using old smbpasswd format. This is no longer supported.!\n")); + DEBUG(0,("mod_smbfilepwd_entry: No changes made, failing.!\n")); + return False; + } + + /* Go past the ']' */ + if(linebuf_len > PTR_DIFF(p, linebuf)) + p++; + + if((linebuf_len > PTR_DIFF(p, linebuf)) && (*p == ':')) { + p++; + + /* We should be pointing at the LCT entry. */ + if((linebuf_len > (PTR_DIFF(p, linebuf) + 13)) && (StrnCaseCmp((char *)p, "LCT-", 4) == 0)) { + + p += 4; + for(i = 0; i < 8; i++) { + if(p[i] == '\0' || !isxdigit(p[i])) + break; + } + if(i == 8) { + /* + * p points at 8 characters of hex digits - + * read into a time_t as the seconds since + * 1970 that the password was last changed. + */ + got_pass_last_set_time = True; + } /* i == 8 */ + } /* *p && StrnCaseCmp() */ + } /* p == ':' */ + } /* p == '[' */ + + /* Entry is correctly formed. */ + + /* Create the 32 byte representation of the new p16 */ + if(pwd->smb_passwd != NULL) { + for (i = 0; i < 16; i++) { + slprintf(&ascii_p16[i*2], sizeof(fstring) - 1, "%02X", (uchar) pwd->smb_passwd[i]); + } + } else { + if(pwd->acct_ctrl & ACB_PWNOTREQ) + fstrcpy(ascii_p16, "NO PASSWORDXXXXXXXXXXXXXXXXXXXXX"); + else + fstrcpy(ascii_p16, "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"); + } + + /* Add on the NT md4 hash */ + ascii_p16[32] = ':'; + wr_len = 66; + if (pwd->smb_nt_passwd != NULL) { + for (i = 0; i < 16; i++) { + slprintf(&ascii_p16[(i*2)+33], sizeof(fstring) - 1, "%02X", (uchar) pwd->smb_nt_passwd[i]); + } + } else { + if(pwd->acct_ctrl & ACB_PWNOTREQ) + fstrcpy(&ascii_p16[33], "NO PASSWORDXXXXXXXXXXXXXXXXXXXXX"); + else + fstrcpy(&ascii_p16[33], "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"); + } + ascii_p16[65] = ':'; + ascii_p16[66] = '\0'; /* null-terminate the string so that strlen works */ + + /* Add on the account info bits and the time of last + password change. */ + + if(got_pass_last_set_time) { + slprintf(&ascii_p16[strlen(ascii_p16)], + sizeof(ascii_p16)-(strlen(ascii_p16)+1), + "%s:LCT-%08X:", + encode_bits, (uint32)pwd->pass_last_set_time ); + wr_len = strlen(ascii_p16); + } + +#ifdef DEBUG_PASSWORD + DEBUG(100,("mod_smbfilepwd_entry: ")); + dump_data(100, ascii_p16, wr_len); +#endif + + if(wr_len > sizeof(linebuf)) { + DEBUG(0, ("mod_smbfilepwd_entry: line to write (%d) is too long.\n", wr_len+1)); + pw_file_unlock(lockfd,&(smbpasswd_state->pw_file_lock_depth)); + fclose(fp); + return (False); + } + + /* + * Do an atomic write into the file at the position defined by + * seekpos. + */ + + /* The mod user write needs to be atomic - so get the fd from + the fp and do a raw write() call. + */ + + fd = fileno(fp); + + if (sys_lseek(fd, pwd_seekpos - 1, SEEK_SET) != pwd_seekpos - 1) { + DEBUG(0, ("mod_smbfilepwd_entry: seek fail on file %s.\n", pfile)); + pw_file_unlock(lockfd,&(smbpasswd_state->pw_file_lock_depth)); + fclose(fp); + return False; + } + + /* Sanity check - ensure the areas we are writing are framed by ':' */ + if (read(fd, linebuf, wr_len+1) != wr_len+1) { + DEBUG(0, ("mod_smbfilepwd_entry: read fail on file %s.\n", pfile)); + pw_file_unlock(lockfd,&(smbpasswd_state->pw_file_lock_depth)); + fclose(fp); + return False; + } + + if ((linebuf[0] != ':') || (linebuf[wr_len] != ':')) { + DEBUG(0, ("mod_smbfilepwd_entry: check on passwd file %s failed.\n", pfile)); + pw_file_unlock(lockfd,&(smbpasswd_state->pw_file_lock_depth)); + fclose(fp); + return False; + } + + if (sys_lseek(fd, pwd_seekpos, SEEK_SET) != pwd_seekpos) { + DEBUG(0, ("mod_smbfilepwd_entry: seek fail on file %s.\n", pfile)); + pw_file_unlock(lockfd,&(smbpasswd_state->pw_file_lock_depth)); + fclose(fp); + return False; + } + + if (write(fd, ascii_p16, wr_len) != wr_len) { + DEBUG(0, ("mod_smbfilepwd_entry: write failed in passwd file %s\n", pfile)); + pw_file_unlock(lockfd,&(smbpasswd_state->pw_file_lock_depth)); + fclose(fp); + return False; + } + + pw_file_unlock(lockfd,&(smbpasswd_state->pw_file_lock_depth)); + fclose(fp); + return True; +} + +/************************************************************************ + Routine to delete an entry in the smbpasswd file by name. +*************************************************************************/ + +static BOOL del_smbfilepwd_entry(struct smbpasswd_privates *smbpasswd_state, const char *name) +{ + const char *pfile = smbpasswd_state->smbpasswd_file; + pstring pfile2; + struct smb_passwd *pwd = NULL; + FILE *fp = NULL; + FILE *fp_write = NULL; + int pfile2_lockdepth = 0; + + slprintf(pfile2, sizeof(pfile2)-1, "%s.%u", pfile, (unsigned)sys_getpid() ); + + /* + * Open the smbpassword file - for update. It needs to be update + * as we need any other processes to wait until we have replaced + * it. + */ + + if((fp = startsmbfilepwent(pfile, PWF_UPDATE, &(smbpasswd_state->pw_file_lock_depth))) == NULL) { + DEBUG(0, ("del_smbfilepwd_entry: unable to open file %s.\n", pfile)); + return False; + } + + /* + * Create the replacement password file. + */ + if((fp_write = startsmbfilepwent(pfile2, PWF_CREATE, &pfile2_lockdepth)) == NULL) { + DEBUG(0, ("del_smbfilepwd_entry: unable to open file %s.\n", pfile)); + endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth)); + return False; + } + + /* + * Scan the file, a line at a time and check if the name matches. + */ + + while ((pwd = getsmbfilepwent(smbpasswd_state, fp)) != NULL) { + char *new_entry; + size_t new_entry_length; + + if (strequal(name, pwd->smb_name)) { + DEBUG(10, ("add_smbfilepwd_entry: found entry with name %s - deleting it.\n", name)); + continue; + } + + /* + * We need to copy the entry out into the second file. + */ + + if((new_entry = format_new_smbpasswd_entry(pwd)) == NULL) + { + DEBUG(0, ("del_smbfilepwd_entry(malloc): Failed to copy entry for user %s to file %s. \ +Error was %s\n", pwd->smb_name, pfile2, strerror(errno))); + unlink(pfile2); + endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth)); + endsmbfilepwent(fp_write, &pfile2_lockdepth); + return False; + } + + new_entry_length = strlen(new_entry); + + if(fwrite(new_entry, 1, new_entry_length, fp_write) != new_entry_length) + { + DEBUG(0, ("del_smbfilepwd_entry(write): Failed to copy entry for user %s to file %s. \ +Error was %s\n", pwd->smb_name, pfile2, strerror(errno))); + unlink(pfile2); + endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth)); + endsmbfilepwent(fp_write, &pfile2_lockdepth); + free(new_entry); + return False; + } + + free(new_entry); + } + + /* + * Ensure pfile2 is flushed before rename. + */ + + if(fflush(fp_write) != 0) + { + DEBUG(0, ("del_smbfilepwd_entry: Failed to flush file %s. Error was %s\n", pfile2, strerror(errno))); + endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth)); + endsmbfilepwent(fp_write,&pfile2_lockdepth); + return False; + } + + /* + * Do an atomic rename - then release the locks. + */ + + if(rename(pfile2,pfile) != 0) { + unlink(pfile2); + } + + endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth)); + endsmbfilepwent(fp_write,&pfile2_lockdepth); + return True; +} + +/********************************************************************* + Create a smb_passwd struct from a SAM_ACCOUNT. + We will not allocate any new memory. The smb_passwd struct + should only stay around as long as the SAM_ACCOUNT does. + ********************************************************************/ +static BOOL build_smb_pass (struct smb_passwd *smb_pw, const SAM_ACCOUNT *sampass) +{ + uid_t uid; + + if (sampass == NULL) + return False; + + ZERO_STRUCTP(smb_pw); + + if (!IS_SAM_UNIX_USER(sampass)) { + smb_pw->smb_userid_set = False; + DEBUG(5,("build_sam_pass: storing user without a UNIX uid or gid. \n")); + } else { + uint32 rid = pdb_get_user_rid(sampass); + smb_pw->smb_userid_set = True; + uid = pdb_get_uid(sampass); + + /* If the user specified a RID, make sure its able to be both stored and retreived */ + if (rid && uid != pdb_user_rid_to_uid(rid)) { + DEBUG(0,("build_sam_pass: Failing attempt to store user with non-uid based user RID. \n")); + return False; + } + + smb_pw->smb_userid=uid; + } + + smb_pw->smb_name=(const char*)pdb_get_username(sampass); + + smb_pw->smb_passwd=pdb_get_lanman_passwd(sampass); + smb_pw->smb_nt_passwd=pdb_get_nt_passwd(sampass); + + smb_pw->acct_ctrl=pdb_get_acct_ctrl(sampass); + smb_pw->pass_last_set_time=pdb_get_pass_last_set_time(sampass); + +#if 0 + /* + * ifdef'out by JFM on 11/29/2001. + * this assertion is no longer valid + * and I don't understand the goal + * and doing the same thing with the group mapping code + * is hairy ! + * + * We just have the RID, in which SID is it valid ? + * our domain SID ? well known SID ? local SID ? + */ + + if (gid != pdb_group_rid_to_gid(pdb_get_group_rid(sampass))) { + DEBUG(0,("build_sam_pass: Failing attempt to store user with non-gid based primary group RID. \n")); + DEBUG(0,("build_sam_pass: %d %d %d. \n", *gid, pdb_group_rid_to_gid(pdb_get_group_rid(sampass)), pdb_get_group_rid(sampass))); + return False; + } +#endif + + return True; +} + +/********************************************************************* + Create a SAM_ACCOUNT from a smb_passwd struct + ********************************************************************/ +static BOOL build_sam_account(struct smbpasswd_privates *smbpasswd_state, SAM_ACCOUNT *sam_pass, const struct smb_passwd *pw_buf) +{ + struct passwd *pwfile; + + if (sam_pass==NULL) { + DEBUG(5,("build_sam_account: SAM_ACCOUNT is NULL\n")); + return False; + } + + if ((smbpasswd_state->permit_non_unix_accounts) + && (pw_buf->smb_userid >= smbpasswd_state->low_nua_userid) + && (pw_buf->smb_userid <= smbpasswd_state->high_nua_userid)) { + + pdb_set_user_rid(sam_pass, pdb_uid_to_user_rid (pw_buf->smb_userid)); + + /* lkclXXXX this is OBSERVED behaviour by NT PDCs, enforced here. + + This was down the bottom for machines, but it looks pretty good as + a general default for non-unix users. --abartlet 2002-01-08 + */ + pdb_set_group_rid (sam_pass, DOMAIN_GROUP_RID_USERS); + + } else { + + uint32 grid; + GROUP_MAP map; + + /* Verify in system password file... + FIXME!!! This is where we should look up an internal + mapping of allocated uid for machine accounts as well + --jerry */ + pwfile = getpwnam_alloc(pw_buf->smb_name); + if (pwfile == NULL) { + DEBUG(0,("build_sam_account: smbpasswd database is corrupt! username %s not in unix passwd database!\n", pw_buf->smb_name)); + return False; + } + + pdb_set_uid (sam_pass, pwfile->pw_uid); + pdb_set_gid (sam_pass, pwfile->pw_gid); + + pdb_set_fullname(sam_pass, pwfile->pw_gecos); + + pdb_set_user_rid(sam_pass, pdb_uid_to_user_rid (pwfile->pw_uid)); + + if (get_group_map_from_gid(pwfile->pw_gid, &map, MAPPING_WITHOUT_PRIV)) { + sid_peek_rid(&map.sid, &grid); + } else { + grid=pdb_gid_to_group_rid(pwfile->pw_gid); + } + + pdb_set_group_rid(sam_pass, grid); + + /* check if this is a user account or a machine account */ + if (pw_buf->smb_name[strlen(pw_buf->smb_name)-1] != '$') + { + pstring str; + + pstrcpy(str, lp_logon_path()); + standard_sub_advanced(-1, pwfile->pw_name, "", pwfile->pw_gid, pw_buf->smb_name, str); + pdb_set_profile_path(sam_pass, str, False); + + pstrcpy(str, lp_logon_home()); + standard_sub_advanced(-1, pwfile->pw_name, "", pwfile->pw_gid, pw_buf->smb_name, str); + pdb_set_homedir(sam_pass, str, False); + + pstrcpy(str, lp_logon_drive()); + standard_sub_advanced(-1, pwfile->pw_name, "", pwfile->pw_gid, pw_buf->smb_name, str); + pdb_set_dir_drive(sam_pass, str, False); + + pstrcpy(str, lp_logon_script()); + standard_sub_advanced(-1, pwfile->pw_name, "", pwfile->pw_gid, pw_buf->smb_name, str); + pdb_set_logon_script(sam_pass, str, False); + + } else { + /* lkclXXXX this is OBSERVED behaviour by NT PDCs, enforced here. */ + /*pdb_set_group_rid (sam_pass, DOMAIN_GROUP_RID_USERS); */ + } + + passwd_free(&pwfile); + } + + pdb_set_username (sam_pass, pw_buf->smb_name); + pdb_set_nt_passwd (sam_pass, pw_buf->smb_nt_passwd); + pdb_set_lanman_passwd (sam_pass, pw_buf->smb_passwd); + pdb_set_acct_ctrl (sam_pass, pw_buf->acct_ctrl); + pdb_set_pass_last_set_time (sam_pass, pw_buf->pass_last_set_time); + pdb_set_pass_can_change_time (sam_pass, pw_buf->pass_last_set_time, True); + pdb_set_domain (sam_pass, lp_workgroup()); + + pdb_set_dir_drive (sam_pass, lp_logon_drive(), False); + +#if 0 /* JERRY */ + /* the smbpasswd format doesn't have a must change time field, so + we can't get this right. The best we can do is to set this to + some time in the future. 21 days seems as reasonable as any other value :) + */ + pdb_set_pass_must_change_time (sam_pass, pw_buf->pass_last_set_time + MAX_PASSWORD_AGE); +#endif + return True; +} + +/***************************************************************** + Functions to be implemented by the new passdb API + ****************************************************************/ +static BOOL smbpasswd_setsampwent (struct pdb_context *context, BOOL update) +{ + struct smbpasswd_privates *smbpasswd_state = (struct smbpasswd_privates*)context->pdb_selected->private_data; + + smbpasswd_state->pw_file = startsmbfilepwent(smbpasswd_state->smbpasswd_file, + update ? PWF_UPDATE : PWF_READ, + &(smbpasswd_state->pw_file_lock_depth)); + + /* did we fail? Should we try to create it? */ + if (!smbpasswd_state->pw_file && update && errno == ENOENT) + { + FILE *fp; + /* slprintf(msg_str,msg_str_len-1, + "smbpasswd file did not exist - attempting to create it.\n"); */ + DEBUG(0,("smbpasswd file did not exist - attempting to create it.\n")); + fp = sys_fopen(smbpasswd_state->smbpasswd_file, "w"); + if (fp) + { + fprintf(fp, "# Samba SMB password file\n"); + fclose(fp); + } + + smbpasswd_state->pw_file = startsmbfilepwent(smbpasswd_state->smbpasswd_file, + update ? PWF_UPDATE : PWF_READ, + &(smbpasswd_state->pw_file_lock_depth)); + } + + return (smbpasswd_state->pw_file != NULL); +} + +static void smbpasswd_endsampwent (struct pdb_context *context) +{ + struct smbpasswd_privates *smbpasswd_state = (struct smbpasswd_privates*)context->pdb_selected->private_data; + endsmbfilepwent(smbpasswd_state->pw_file, &(smbpasswd_state->pw_file_lock_depth)); +} + +/***************************************************************** + ****************************************************************/ +static BOOL smbpasswd_getsampwent(struct pdb_context *context, SAM_ACCOUNT *user) +{ + struct smbpasswd_privates *smbpasswd_state = (struct smbpasswd_privates*)context->pdb_selected->private_data; + struct smb_passwd *pw_buf=NULL; + BOOL done = False; + DEBUG(5,("pdb_getsampwent\n")); + + if (user==NULL) { + DEBUG(5,("pdb_getsampwent (smbpasswd): user is NULL\n")); +#if 0 + smb_panic("NULL pointer passed to getsampwent (smbpasswd)\n"); +#endif + return False; + } + + while (!done) + { + /* do we have an entry? */ + pw_buf = getsmbfilepwent(smbpasswd_state, smbpasswd_state->pw_file); + if (pw_buf == NULL) + return False; + + /* build the SAM_ACCOUNT entry from the smb_passwd struct. + We loop in case the user in the pdb does not exist in + the local system password file */ + if (build_sam_account(smbpasswd_state, user, pw_buf)) + done = True; + } + + DEBUG(5,("getsampwent (smbpasswd): done\n")); + + /* success */ + return True; +} + + +/**************************************************************** + Search smbpasswd file by iterating over the entries. Do not + call getpwnam() for unix account information until we have found + the correct entry + ***************************************************************/ +static BOOL smbpasswd_getsampwnam(struct pdb_context *context, SAM_ACCOUNT *sam_acct, const char *username) +{ + struct smbpasswd_privates *smbpasswd_state = (struct smbpasswd_privates*)context->pdb_selected->private_data; + struct smb_passwd *smb_pw; + void *fp = NULL; + char *domain = NULL; + char *user = NULL; + fstring name; + + DEBUG(10, ("getsampwnam (smbpasswd): search by name: %s\n", username)); + + + /* break the username from the domain if we have + been given a string in the form 'DOMAIN\user' */ + fstrcpy (name, username); + if ((user=strchr_m(name, '\\')) != NULL) { + domain = name; + *user = '\0'; + user++; + } + + /* if a domain was specified and it wasn't ours + then there is no chance of matching */ + if ( domain && !StrCaseCmp(domain, lp_workgroup()) ) + return False; + + /* startsmbfilepwent() is used here as we don't want to lookup + the UNIX account in the local system password file until + we have a match. */ + fp = startsmbfilepwent(smbpasswd_state->smbpasswd_file, PWF_READ, &(smbpasswd_state->pw_file_lock_depth)); + + if (fp == NULL) { + DEBUG(0, ("unable to open passdb database.\n")); + return False; + } + + /* if we have a domain name, then we should map it to a UNIX + username first */ + if ( domain ) + map_username(user); + + while ( ((smb_pw=getsmbfilepwent(smbpasswd_state, fp)) != NULL)&& (!strequal(smb_pw->smb_name, username)) ) + /* do nothing....another loop */ ; + + endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth)); + + + /* did we locate the username in smbpasswd */ + if (smb_pw == NULL) + return False; + + DEBUG(10, ("getsampwnam (smbpasswd): found by name: %s\n", smb_pw->smb_name)); + + if (!sam_acct) { + DEBUG(10,("getsampwnam (smbpasswd): SAM_ACCOUNT is NULL\n")); +#if 0 + smb_panic("NULL pointer passed to pdb_getsampwnam\n"); +#endif + return False; + } + + /* now build the SAM_ACCOUNT */ + if (!build_sam_account(smbpasswd_state, sam_acct, smb_pw)) + return False; + + /* success */ + return True; +} + + +static BOOL smbpasswd_getsampwrid(struct pdb_context *context, SAM_ACCOUNT *sam_acct,uint32 rid) +{ + struct smbpasswd_privates *smbpasswd_state = (struct smbpasswd_privates*)context->pdb_selected->private_data; + struct smb_passwd *smb_pw; + void *fp = NULL; + + DEBUG(10, ("pdb_getsampwrid: search by rid: %d\n", rid)); + + /* Open the sam password file - not for update. */ + fp = startsmbfilepwent(smbpasswd_state->smbpasswd_file, PWF_READ, &(smbpasswd_state->pw_file_lock_depth)); + + if (fp == NULL) { + DEBUG(0, ("unable to open passdb database.\n")); + return False; + } + + while ( ((smb_pw=getsmbfilepwent(smbpasswd_state, fp)) != NULL) && (pdb_uid_to_user_rid(smb_pw->smb_userid) != rid) ) + /* do nothing */ ; + + endsmbfilepwent(fp, &(smbpasswd_state->pw_file_lock_depth)); + + + /* did we locate the username in smbpasswd */ + if (smb_pw == NULL) + return False; + + DEBUG(10, ("getsampwrid (smbpasswd): found by name: %s\n", smb_pw->smb_name)); + + if (!sam_acct) { + DEBUG(10,("getsampwrid: (smbpasswd) SAM_ACCOUNT is NULL\n")); +#if 0 + smb_panic("NULL pointer passed to pdb_getsampwrid\n"); +#endif + return False; + } + + /* now build the SAM_ACCOUNT */ + if (!build_sam_account (smbpasswd_state, sam_acct, smb_pw)) + return False; + + /* success */ + return True; +} + +static BOOL smbpasswd_add_sam_account(struct pdb_context *context, const SAM_ACCOUNT *sampass) +{ + struct smbpasswd_privates *smbpasswd_state = (struct smbpasswd_privates*)context->pdb_selected->private_data; + struct smb_passwd smb_pw; + + /* convert the SAM_ACCOUNT */ + if (!build_smb_pass(&smb_pw, sampass)) { + return False; + } + + /* add the entry */ + if(!add_smbfilepwd_entry(smbpasswd_state, &smb_pw)) { + return False; + } + + return True; +} + +static BOOL smbpasswd_update_sam_account(struct pdb_context *context, const SAM_ACCOUNT *sampass) +{ + struct smbpasswd_privates *smbpasswd_state = (struct smbpasswd_privates*)context->pdb_selected->private_data; + struct smb_passwd smb_pw; + + /* convert the SAM_ACCOUNT */ + if (!build_smb_pass(&smb_pw, sampass)) + return False; + + /* update the entry */ + if(!mod_smbfilepwd_entry(smbpasswd_state, &smb_pw)) + return False; + + return True; +} + +static BOOL smbpasswd_delete_sam_account (struct pdb_context *context, const SAM_ACCOUNT *sampass) +{ + struct smbpasswd_privates *smbpasswd_state = (struct smbpasswd_privates*)context->pdb_selected->private_data; + + const char *username = pdb_get_username(sampass); + + return del_smbfilepwd_entry(smbpasswd_state, username); +} + +static void free_private_data(void **vp) +{ + struct smbpasswd_privates **privates = (struct smbpasswd_privates**)vp; + + endsmbfilepwent((*privates)->pw_file, &((*privates)->pw_file_lock_depth)); + + *privates = NULL; + /* No need to free any further, as it is talloc()ed */ +} + + +NTSTATUS pdb_init_smbpasswd(PDB_CONTEXT *pdb_context, PDB_METHODS **pdb_method, const char *location) +{ + NTSTATUS nt_status; + struct smbpasswd_privates *privates; + + if (!NT_STATUS_IS_OK(nt_status = make_pdb_methods(pdb_context->mem_ctx, pdb_method))) { + return nt_status; + } + + (*pdb_method)->name = "smbpasswd"; + + (*pdb_method)->setsampwent = smbpasswd_setsampwent; + (*pdb_method)->endsampwent = smbpasswd_endsampwent; + (*pdb_method)->getsampwent = smbpasswd_getsampwent; + (*pdb_method)->getsampwnam = smbpasswd_getsampwnam; + (*pdb_method)->getsampwrid = smbpasswd_getsampwrid; + (*pdb_method)->add_sam_account = smbpasswd_add_sam_account; + (*pdb_method)->update_sam_account = smbpasswd_update_sam_account; + (*pdb_method)->delete_sam_account = smbpasswd_delete_sam_account; + + /* Setup private data and free function */ + + privates = talloc_zero(pdb_context->mem_ctx, sizeof(struct smbpasswd_privates)); + + if (!privates) { + DEBUG(0, ("talloc() failed for smbpasswd private_data!\n")); + return NT_STATUS_NO_MEMORY; + } + + /* Store some config details */ + + if (location) { + privates->smbpasswd_file = talloc_strdup(pdb_context->mem_ctx, location); + } else { + privates->smbpasswd_file = talloc_strdup(pdb_context->mem_ctx, lp_smb_passwd_file()); + } + + if (!privates->smbpasswd_file) { + DEBUG(0, ("talloc_strdp() failed for storing smbpasswd location!\n")); + return NT_STATUS_NO_MEMORY; + } + + (*pdb_method)->private_data = privates; + + (*pdb_method)->free_private_data = free_private_data; + + return NT_STATUS_OK; +} + +NTSTATUS pdb_init_smbpasswd_nua(PDB_CONTEXT *pdb_context, PDB_METHODS **pdb_method, const char *location) +{ + NTSTATUS nt_status; + struct smbpasswd_privates *privates; + + if (!NT_STATUS_IS_OK(nt_status = pdb_init_smbpasswd(pdb_context, pdb_method, location))) { + return nt_status; + } + + (*pdb_method)->name = "smbpasswd_nua"; + + privates = (*pdb_method)->private_data; + + privates->permit_non_unix_accounts = True; + + if (!lp_non_unix_account_range(&privates->low_nua_userid, &privates->high_nua_userid)) { + DEBUG(0, ("cannot use smbpasswd_nua without 'non unix account range' in smb.conf!\n")); + return NT_STATUS_UNSUCCESSFUL; + } + + return NT_STATUS_OK; +} |