diff options
Diffstat (limited to 'source3/lib')
| -rw-r--r-- | source3/lib/replace/getaddrinfo.c | 502 | ||||
| -rw-r--r-- | source3/lib/replace/replace.h | 10 | ||||
| -rw-r--r-- | source3/lib/replace/system/getaddrinfo.h | 158 | ||||
| -rw-r--r-- | source3/lib/replace/system/network.h | 6 | ||||
| -rw-r--r-- | source3/lib/system.c | 8 | ||||
| -rw-r--r-- | source3/lib/util.c | 8 |
6 files changed, 679 insertions, 13 deletions
diff --git a/source3/lib/replace/getaddrinfo.c b/source3/lib/replace/getaddrinfo.c new file mode 100644 index 0000000000..519c30066b --- /dev/null +++ b/source3/lib/replace/getaddrinfo.c @@ -0,0 +1,502 @@ +/* +PostgreSQL Database Management System +(formerly known as Postgres, then as Postgres95) + +Portions Copyright (c) 1996-2005, The PostgreSQL Global Development Group + +Portions Copyright (c) 1994, The Regents of the University of California + +Permission to use, copy, modify, and distribute this software and its +documentation for any purpose, without fee, and without a written agreement +is hereby granted, provided that the above copyright notice and this paragraph +and the following two paragraphs appear in all copies. + +IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR +DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING +LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, +EVEN IF THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF +SUCH DAMAGE. + +THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES, +INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY +AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS +ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATIONS +TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + +*/ + +/*------------------------------------------------------------------------- + * + * getaddrinfo.c + * Support getaddrinfo() on platforms that don't have it. + * + * We also supply getnameinfo() here, assuming that the platform will have + * it if and only if it has getaddrinfo(). If this proves false on some + * platform, we'll need to split this file and provide a separate configure + * test for getnameinfo(). + * + * Copyright (c) 2003-2007, PostgreSQL Global Development Group + * + * Copyright (C) 2007 Jeremy Allison. + * Modified to return multiple IPv4 addresses for Samba. + * + *------------------------------------------------------------------------- + */ + +#include "replace.h" +#include "system/network.h" + +#ifndef SMB_MALLOC +#define SMB_MALLOC(s) malloc(s) +#endif + +#ifndef SMB_STRDUP +#define SMB_STRDUP(s) strdup(s) +#endif + +static int check_hostent_err(struct hostent *hp) +{ + if (!hp) { + switch (h_errno) { + case HOST_NOT_FOUND: + case NO_DATA: + return EAI_NONAME; + case TRY_AGAIN: + return EAI_AGAIN; + case NO_RECOVERY: + default: + return EAI_FAIL; + } + } + if (!hp->h_name || hp->h_addrtype != AF_INET) { + return EAI_FAIL; + } + return 0; +} + +static char *canon_name_from_hostent(struct hostent *hp, + int *perr) +{ + char *ret = NULL; + + *perr = check_hostent_err(hp); + if (*perr) { + return NULL; + } + ret = SMB_STRDUP(hp->h_name); + if (!ret) { + *perr = EAI_MEMORY; + } + return ret; +} + +static char *get_my_canon_name(int *perr) +{ + char name[HOST_NAME_MAX+1]; + + if (gethostname(name, HOST_NAME_MAX) == -1) { + *perr = EAI_FAIL; + return NULL; + } + /* Ensure null termination. */ + name[HOST_NAME_MAX] = '\0'; + return canon_name_from_hostent(gethostbyname(name), perr); +} + +static char *get_canon_name_from_addr(struct in_addr ip, + int *perr) +{ + return canon_name_from_hostent( + gethostbyaddr(&ip, sizeof(ip), AF_INET), + perr); +} + +static struct addrinfo *alloc_entry(const struct addrinfo *hints, + struct in_addr ip, + unsigned short port) +{ + struct sockaddr_in *psin = NULL; + struct addrinfo *ai = SMB_MALLOC(sizeof(*ai)); + + if (!ai) { + return NULL; + } + memset(ai, '\0', sizeof(*ai)); + + psin = SMB_MALLOC(sizeof(*psin)); + if (!psin) { + free(ai); + return NULL; + } + + memset(psin, '\0', sizeof(*psin)); + + psin->sin_family = AF_INET; + psin->sin_port = htons(port); + psin->sin_addr = ip; + + ai->ai_flags = 0; + ai->ai_family = AF_INET; + ai->ai_socktype = hints->ai_socktype; + ai->ai_protocol = hints->ai_protocol; + ai->ai_addrlen = sizeof(*psin); + ai->ai_addr = (struct sockaddr *) psin; + ai->ai_canonname = NULL; + ai->ai_next = NULL; + + return ai; +} + +/* + * get address info for a single ipv4 address. + * + * Bugs: - servname can only be a number, not text. + */ + +static int getaddr_info_single_addr(const char *service, + uint32_t addr, + const struct addrinfo *hints, + struct addrinfo **res) +{ + + struct addrinfo *ai = NULL; + struct in_addr ip; + unsigned short port = 0; + + if (service) { + port = (unsigned short)atoi(service); + } + ip.s_addr = htonl(addr); + + ai = alloc_entry(hints, ip, port); + if (!ai) { + return EAI_MEMORY; + } + + /* If we're asked for the canonical name, + * make sure it returns correctly. */ + if (!(hints->ai_flags & AI_NUMERICSERV) && + hints->ai_flags & AI_CANONNAME) { + int err; + if (addr == INADDR_LOOPBACK || addr == INADDR_ANY) { + ai->ai_canonname = get_my_canon_name(&err); + } else { + ai->ai_canonname = + get_canon_name_from_addr(ip,&err); + } + if (ai->ai_canonname == NULL) { + freeaddrinfo(ai); + return err; + } + } + + *res = ai; + return 0; +} + +/* + * get address info for multiple ipv4 addresses. + * + * Bugs: - servname can only be a number, not text. + */ + +static int getaddr_info_name(const char *node, + const char *service, + const struct addrinfo *hints, + struct addrinfo **res) +{ + struct addrinfo *listp = NULL, *prevp = NULL; + char **pptr = NULL; + int err; + struct hostent *hp = NULL; + unsigned short port = 0; + + if (service) { + port = (unsigned short)atoi(service); + } + + hp = gethostbyname(node); + err = check_hostent_err(hp); + if (err) { + return err; + } + + for(pptr = hp->h_addr_list; *pptr; pptr++) { + struct in_addr ip = *(struct in_addr *)pptr; + struct addrinfo *ai = alloc_entry(hints, ip, port); + + if (!ai) { + freeaddrinfo(listp); + return EAI_MEMORY; + } + + if (!listp) { + listp = ai; + prevp = ai; + ai->ai_canonname = SMB_STRDUP(hp->h_name); + if (!ai->ai_canonname) { + freeaddrinfo(listp); + return EAI_MEMORY; + } + } else { + prevp->ai_next = ai; + prevp = ai; + } + } + *res = listp; + return 0; +} + +/* + * get address info for ipv4 sockets. + * + * Bugs: - servname can only be a number, not text. + */ + +int getaddrinfo(const char *node, + const char *service, + const struct addrinfo * hintp, + struct addrinfo ** res) +{ + struct addrinfo hints; + + /* Setup the hints struct. */ + if (hintp == NULL) { + memset(&hints, 0, sizeof(hints)); + hints.ai_family = AF_INET; + hints.ai_socktype = SOCK_STREAM; + } else { + memcpy(&hints, hintp, sizeof(hints)); + } + + if (hints.ai_family != AF_INET && hints.ai_family != AF_UNSPEC) { + return EAI_FAMILY; + } + + if (hints.ai_socktype == 0) { + hints.ai_socktype = SOCK_STREAM; + } + + if (!node && !service) { + return EAI_NONAME; + } + + if (node) { + if (node[0] == '\0') { + return getaddr_info_single_addr(service, + INADDR_ANY, + &hints, + res); + } else if (hints.ai_flags & AI_NUMERICHOST) { + struct in_addr ip; + if (!inet_aton(node, &ip)) { + return EAI_FAIL; + } + return getaddr_info_single_addr(service, + ntohl(ip.s_addr), + &hints, + res); + } else { + return getaddr_info_name(node, + service, + &hints, + res); + } + } else if (hints.ai_flags & AI_PASSIVE) { + return getaddr_info_single_addr(service, + INADDR_ANY, + &hints, + res); + } + return getaddr_info_single_addr(service, + INADDR_LOOPBACK, + &hints, + res); +} + + +void freeaddrinfo(struct addrinfo *res) +{ + struct addrinfo *next = NULL; + + for (;res; res = next) { + next = res->ai_next; + if (res->ai_canonname) { + free(res->ai_canonname); + } + if (res->ai_addr) { + free(res->ai_addr); + } + free(res); + } +} + + +const char *gai_strerror(int errcode) +{ +#ifdef HAVE_HSTRERROR + int hcode; + + switch (errcode) + { + case EAI_NONAME: + hcode = HOST_NOT_FOUND; + break; + case EAI_AGAIN: + hcode = TRY_AGAIN; + break; + case EAI_FAIL: + default: + hcode = NO_RECOVERY; + break; + } + + return hstrerror(hcode); +#else /* !HAVE_HSTRERROR */ + + switch (errcode) + { + case EAI_NONAME: + return "Unknown host"; + case EAI_AGAIN: + return "Host name lookup failure"; +#ifdef EAI_BADFLAGS + case EAI_BADFLAGS: + return "Invalid argument"; +#endif +#ifdef EAI_FAMILY + case EAI_FAMILY: + return "Address family not supported"; +#endif +#ifdef EAI_MEMORY + case EAI_MEMORY: + return "Not enough memory"; +#endif +#ifdef EAI_NODATA + case EAI_NODATA: + return "No host data of that type was found"; +#endif +#ifdef EAI_SERVICE + case EAI_SERVICE: + return "Class type not found"; +#endif +#ifdef EAI_SOCKTYPE + case EAI_SOCKTYPE: + return "Socket type not supported"; +#endif + default: + return "Unknown server error"; + } +#endif /* HAVE_HSTRERROR */ +} + +static int gethostnameinfo(const struct sockaddr *sa, + char *node, + size_t nodelen, + int flags) +{ + int ret = -1; + char *p = NULL; + + if (!(flags & NI_NUMERICHOST)) { + struct hostent *hp = gethostbyaddr( + &((struct sockaddr_in *)sa)->sin_addr, + sizeof(struct in_addr), + sa->sa_family); + ret = check_hostent_err(hp); + if (ret == 0) { + /* Name looked up successfully. */ + ret = snprintf(node, nodelen, "%s", hp->h_name); + if (ret == -1 || ret > nodelen) { + return EAI_MEMORY; + } + if (flags & NI_NOFQDN) { + p = strchr(node,'.'); + if (p) { + *p = '\0'; + } + } + return 0; + } + + if (flags & NI_NAMEREQD) { + /* If we require a name and didn't get one, + * automatically fail. */ + return ret; + } + /* Otherwise just fall into the numeric host code... */ + } + p = inet_ntoa(((struct sockaddr_in *)sa)->sin_addr); + ret = snprintf(node, nodelen, "%s", p); + if (ret == -1 || ret > nodelen) { + return EAI_MEMORY; + } + return 0; +} + +static int getservicenameinfo(const struct sockaddr *sa, + char *service, + size_t servicelen, + int flags) +{ + int ret = -1; + int port = ntohs(((struct sockaddr_in *)sa)->sin_port); + + if (!(flags & NI_NUMERICSERV)) { + struct servent *se = getservbyport( + port, + (flags & NI_DGRAM) ? "udp" : "tcp"); + if (se && se->s_name) { + /* Service name looked up successfully. */ + ret = snprintf(service, servicelen, "%s", se->s_name); + if (ret == -1 || ret > servicelen) { + return EAI_MEMORY; + } + return 0; + } + /* Otherwise just fall into the numeric service code... */ + } + ret = snprintf(service, servicelen, "%d", port); + if (ret == -1 || ret > servicelen) { + return EAI_MEMORY; + } + return 0; +} + +/* + * Convert an ipv4 address to a hostname. + * + * Bugs: - No IPv6 support. + */ +int getnameinfo(const struct sockaddr *sa, socklen_t salen, + char *node, size_t nodelen, + char *service, size_t servicelen, int flags) +{ + + /* Invalid arguments. */ + if (sa == NULL || (node == NULL && service == NULL)) { + return EAI_FAIL; + } + + if (sa->sa_family != AF_INET) { + return EAI_FAIL; + } + + if (salen < sizeof(struct sockaddr_in)) { + return EAI_FAIL; + } + + /* We don't support those. */ + if ((node && !(flags & NI_NUMERICHOST)) + || (service && !(flags & NI_NUMERICSERV))) + return EAI_FAIL; + + if (node) { + return gethostnameinfo(sa, node, nodelen, flags); + } + + if (service) { + return getservicenameinfo(sa, service, servicelen, flags); + } + return 0; +} diff --git a/source3/lib/replace/replace.h b/source3/lib/replace/replace.h index 27265e35c4..ca4becaa70 100644 --- a/source3/lib/replace/replace.h +++ b/source3/lib/replace/replace.h @@ -139,7 +139,7 @@ int setenv(const char *name, const char *value, int overwrite); #ifndef HAVE_UNSETENV #define unsetenv rep_unsetenv -int rep_unsetenv(const char *name); +int rep_unsetenv(const char *name); #endif #ifndef HAVE_SETEUID @@ -163,7 +163,7 @@ char *rep_strcasestr(const char *haystack, const char *needle); #endif #ifndef HAVE_STRTOK_R -#define strtok_r rep_strtok_r +#define strtok_r rep_strtok_r char *rep_strtok_r(char *s, const char *delim, char **save_ptr); #endif @@ -330,9 +330,7 @@ ssize_t rep_pread(int __fd, void *__buf, size_t __nbytes, off_t __offset); ssize_t rep_pwrite(int __fd, const void *__buf, size_t __nbytes, off_t __offset); #endif -#if !defined(HAVE_INET_PTON) || !defined(HAVE_INET_NTOP) #include "system/network.h" -#endif #ifndef HAVE_INET_PTON int rep_inet_pton(int af, const char *src, void *dst); @@ -344,6 +342,10 @@ const char *rep_inet_ntop(int af, const void *src, char *dst, socklen_t size); #define inet_ntop rep_inet_ntop #endif +#if !defined(HAVE_GETADDRINFO) +#include "system/getaddrinfo.h" +#endif + #ifdef HAVE_LIMITS_H #include <limits.h> #endif diff --git a/source3/lib/replace/system/getaddrinfo.h b/source3/lib/replace/system/getaddrinfo.h new file mode 100644 index 0000000000..ed678bd065 --- /dev/null +++ b/source3/lib/replace/system/getaddrinfo.h @@ -0,0 +1,158 @@ +/* +PostgreSQL Database Management System +(formerly known as Postgres, then as Postgres95) + +Portions Copyright (c) 1996-2005, The PostgreSQL Global Development Group + +Portions Copyright (c) 1994, The Regents of the University of California + +Permission to use, copy, modify, and distribute this software and its +documentation for any purpose, without fee, and without a written agreement +is hereby granted, provided that the above copyright notice and this paragraph +and the following two paragraphs appear in all copies. + +IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR +DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING +LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, +EVEN IF THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF +SUCH DAMAGE. + +THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES, +INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY +AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS +ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATIONS +TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + +*/ + +/*------------------------------------------------------------------------- + * + * getaddrinfo.h + * Support getaddrinfo() on platforms that don't have it. + * + * Note: we use our own routines on platforms that don't HAVE_STRUCT_ADDRINFO, + * whether or not the library routine getaddrinfo() can be found. This + * policy is needed because on some platforms a manually installed libbind.a + * may provide getaddrinfo(), yet the system headers may not provide the + * struct definitions needed to call it. To avoid conflict with the libbind + * definition in such cases, we rename our routines to pg_xxx() via macros. + * + * This code will also work on platforms where struct addrinfo is defined + * in the system headers but no getaddrinfo() can be located. + * + * Copyright (c) 2003-2007, PostgreSQL Global Development Group + * + *------------------------------------------------------------------------- + */ +#ifndef GETADDRINFO_H +#define GETADDRINFO_H + + +/* Various macros that ought to be in <netdb.h>, but might not be */ + +#ifndef EAI_FAIL +#define EAI_BADFLAGS (-1) +#define EAI_NONAME (-2) +#define EAI_AGAIN (-3) +#define EAI_FAIL (-4) +#define EAI_FAMILY (-6) +#define EAI_SOCKTYPE (-7) +#define EAI_SERVICE (-8) +#define EAI_MEMORY (-10) +#define EAI_SYSTEM (-11) +#endif /* !EAI_FAIL */ + +#ifndef AI_PASSIVE +#define AI_PASSIVE 0x0001 +#endif + +#ifndef AI_NUMERICHOST +/* + * some platforms don't support AI_NUMERICHOST; define as zero if using + * the system version of getaddrinfo... + */ +#if defined(HAVE_STRUCT_ADDRINFO) && defined(HAVE_GETADDRINFO) +#define AI_NUMERICHOST 0 +#else +#define AI_NUMERICHOST 0x0004 +#endif +#endif + +#ifndef NI_NUMERICHOST +#define NI_NUMERICHOST 1 +#endif + +#ifndef NI_NUMERICSERV +#define NI_NUMERICSERV 2 +#endif + +#ifndef NI_NOFQDN +#define NI_NOFQDN 4 +#endif + +#ifndef NI_NAMEREQD +#define NI_NAMEREQD 8 +#endif + +#ifndef NI_DGRAM +#define NI_DGRAM 16 +#endif + + +#ifndef NI_MAXHOST +#define NI_MAXHOST 1025 +#endif + +#ifndef NI_MAXSERV +#define NI_MAXSERV 32 +#endif + +#ifndef HAVE_STRUCT_ADDRINFO + +struct addrinfo +{ + int ai_flags; + int ai_family; + int ai_socktype; + int ai_protocol; + size_t ai_addrlen; + struct sockaddr *ai_addr; + char *ai_canonname; + struct addrinfo *ai_next; +}; +#endif /* HAVE_STRUCT_ADDRINFO */ + + +#ifndef HAVE_GETADDRINFO + +/* Rename private copies per comments above */ +#ifdef getaddrinfo +#undef getaddrinfo +#endif +#define getaddrinfo pg_getaddrinfo + +#ifdef freeaddrinfo +#undef freeaddrinfo +#endif +#define freeaddrinfo pg_freeaddrinfo + +#ifdef gai_strerror +#undef gai_strerror +#endif +#define gai_strerror pg_gai_strerror + +#ifdef getnameinfo +#undef getnameinfo +#endif +#define getnameinfo pg_getnameinfo + +extern int getaddrinfo(const char *node, const char *service, + const struct addrinfo * hints, struct addrinfo ** res); +extern void freeaddrinfo(struct addrinfo * res); +extern const char *gai_strerror(int errcode); +extern int getnameinfo(const struct sockaddr * sa, socklen_t salen, + char *node, size_t nodelen, + char *service, size_t servicelen, int flags); +#endif /* HAVE_GETADDRINFO */ + +#endif /* GETADDRINFO_H */ diff --git a/source3/lib/replace/system/network.h b/source3/lib/replace/system/network.h index d5d2be068e..a09d3bb01b 100644 --- a/source3/lib/replace/system/network.h +++ b/source3/lib/replace/system/network.h @@ -126,9 +126,13 @@ typedef int socklen_t; typedef unsigned short int sa_family_t; #endif -#ifndef HAVE_SOCKADDR_STORAGE +#ifndef HAVE_STRUCT_SOCKADDR_STORAGE #define sockaddr_storage sockaddr_in #define ss_family sin_family #endif +#ifndef HOST_NAME_MAX +#define HOST_NAME_MAX 256 +#endif + #endif diff --git a/source3/lib/system.c b/source3/lib/system.c index ab5c06d5f6..bc7de84767 100644 --- a/source3/lib/system.c +++ b/source3/lib/system.c @@ -683,7 +683,7 @@ int sys_chroot(const char *dname) } /************************************************************************** -A wrapper for gethostbyname() that tries avoids looking up hostnames +A wrapper for gethostbyname() that tries avoids looking up hostnames in the root domain, which can cause dial-on-demand links to come up for no apparent reason. ****************************************************************************/ @@ -691,7 +691,7 @@ apparent reason. struct hostent *sys_gethostbyname(const char *name) { #ifdef REDUCE_ROOT_DNS_LOOKUPS - char query[256], hostname[256]; + char query[HOST_NAME_MAX], hostname[HOST_NAME_MAX]; char *domain; /* Does this name have any dots in it? If so, make no change */ @@ -699,9 +699,9 @@ struct hostent *sys_gethostbyname(const char *name) if (strchr_m(name, '.')) return(gethostbyname(name)); - /* Get my hostname, which should have domain name + /* Get my hostname, which should have domain name attached. If not, just do the gethostname on the - original string. + original string. */ gethostname(hostname, sizeof(hostname) - 1); diff --git a/source3/lib/util.c b/source3/lib/util.c index 6c86376e57..b98441ea53 100644 --- a/source3/lib/util.c +++ b/source3/lib/util.c @@ -1203,7 +1203,7 @@ void safe_free(void *p) BOOL get_myname(char *my_name) { - pstring hostname; + fstring hostname; *hostname = 0; @@ -1211,7 +1211,7 @@ BOOL get_myname(char *my_name) if (gethostname(hostname, sizeof(hostname)) == -1) { DEBUG(0,("gethostname failed\n")); return False; - } + } /* Ensure null termination. */ hostname[sizeof(hostname)-1] = '\0'; @@ -1222,10 +1222,10 @@ BOOL get_myname(char *my_name) if (p) *p = 0; - + fstrcpy(my_name,hostname); } - + return(True); } |