/* INI LIBRARY Reading configuration from INI file and storing as a collection. Copyright (C) Dmitri Pal <dpal@redhat.com> 2009 INI Library is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. INI Library 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with INI Library. If not, see <http://www.gnu.org/licenses/>. */ #define _GNU_SOURCE #include <stdio.h> #include <errno.h> #include <string.h> #include <ctype.h> #include <stdlib.h> #include <locale.h> #include "config.h" /* For error text */ #include <libintl.h> #define _(String) gettext (String) /* INI file is used as a collection */ #include "collection_priv.h" #include "collection.h" #include "collection_tools.h" #include "trace.h" #include "ini_config.h" #define NAME_OVERHEAD 10 #define SLASH "/" /* Name of the special collection used to store parsing errors */ #define FILE_ERROR_SET "ini_file_error_set" /* Text error strings used when errors are printed out */ #define WARNING_TXT _("Warning") #define ERROR_TXT _("Error") /* For parse errors */ #define WRONG_COLLECTION _("Passed in list is not a list of parse errors.\n") #define FAILED_TO_PROCCESS _("Internal Error. Failed to process error list.\n") #define ERROR_HEADER _("Parsing errors and warnings in file: %s\n") /* For grammar errors */ #define WRONG_GRAMMAR _("Passed in list is not a list of grammar errors.\n") #define FAILED_TO_PROC_G _("Internal Error. Failed to process list of grammar errors.\n") #define ERROR_HEADER_G _("Logical errors and warnings in file: %s\n") /* For validation errors */ #define WRONG_VALIDATION _("Passed in list is not a list of validation errors.\n") #define FAILED_TO_PROC_V _("Internal Error. Failed to process list of validation errors.\n") #define ERROR_HEADER_V _("Validation errors and warnings in file: %s\n") #define LINE_FORMAT _("%s (%d) on line %d: %s\n") /* Codes that parsing function can return */ #define RET_PAIR 0 #define RET_COMMENT 1 #define RET_SECTION 2 #define RET_INVALID 3 #define RET_EMPTY 4 #define RET_EOF 5 #define RET_ERROR 6 #define INI_ERROR "errors" #define INI_ERROR_NAME "errname" /* Different error string functions can be passed as callbacks */ typedef const char * (*error_fn)(int error); /* Function to return parsing error */ const char *parsing_error_str(int parsing_error) { const char *placeholder= _("Unknown pasing error."); const char *str_error[] = { _("Data is too long."), _("No closing bracket."), _("Section name is missing."), _("Section name is too long."), _("Equal sign is missing."), _("Property name is missing."), _("Property name is too long.") }; /* Check the range */ if ((parsing_error < 1) || (parsing_error > ERR_MAXPARSE)) return placeholder; else return str_error[parsing_error-1]; } /* Function to return grammar error */ const char *grammar_error_str(int grammar_error) { const char *placeholder= _("Unknown grammar error."); /* FIXME - this is a temporary placeholder !!!! */ const char *str_error[] = { _(""), _(""), _(""), _(""), _(""), _(""), _("") }; /* Check the range */ if ((grammar_error < 1) || (grammar_error > ERR_MAXGRAMMAR)) return placeholder; else return str_error[grammar_error-1]; } /* Function to return validation error */ const char *validation_error_str(int validation_error) { const char *placeholder= _("Unknown validation error."); /* FIXME - this is a temporary placeholder !!!! */ const char *str_error[] = { _(""), _(""), _(""), _(""), _(""), _(""), _("") }; /* Check the range */ if ((validation_error < 1) || (validation_error > ERR_MAXVALID)) return placeholder; else return str_error[validation_error-1]; } /* Internal function to read line from INI file */ int read_line(FILE *file, char *buf, int read_size, char **key, char **value, int *length, int *ext_error); /***************************************************************************/ /* Function to read single ini file and pupulate * the provided collection with subcollcetions from the file */ static int ini_to_collection(const char *filename, struct collection_item *ini_config, int error_level, struct collection_item **error_list, struct collection_item **lines) { FILE *file; int error; int status; int section_count = 0; char *key = NULL; char *value = NULL; struct collection_item *current_section = NULL; int length; int ext_err = -1; struct parse_error pe; int line = 0; int created = 0; char buf[BUFFER_SIZE+1]; TRACE_FLOW_STRING("ini_to_collection", "Entry"); /* Open file for reading */ file = fopen(filename, "r"); if (file == NULL) { error = errno; TRACE_ERROR_NUMBER("Failed to open file - but this is OK", error); return ENOENT; } /* Open the collection of errors */ if (error_list != NULL) { *error_list = NULL; error = col_create_collection(error_list, INI_ERROR, COL_CLASS_INI_PERROR); if (error) { TRACE_ERROR_NUMBER("Failed to create error collection", error); fclose(file); return error; } /* Add file name as the first item */ error = col_add_str_property(*error_list, NULL, INI_ERROR_NAME, filename, 0); if (error) { TRACE_ERROR_NUMBER("Failed to and name to collection", error); fclose(file); col_destroy_collection(*error_list); return error; } created = 1; } /* Read file lines */ while (1) { /* Always read one less than the buffer */ status = read_line(file, buf, BUFFER_SIZE+1, &key, &value, &length, &ext_err); if (status == RET_EOF) break; line++; switch (status) { case RET_PAIR: /* Add line to the collection of lines */ if (lines) { error = col_add_int_property(*lines, NULL, key, line); if (error) { TRACE_ERROR_NUMBER("Failed to add line to line collection", error); fclose(file); col_destroy_collection(current_section); if (created) { col_destroy_collection(*error_list); *error_list = NULL; } return error; } } /* Do we have a section at the top of the file ? */ if (section_count == 0) { /* Check if collection already exists */ error = col_get_collection_reference(ini_config, ¤t_section, INI_DEFAULT_SECTION); if (error != EOK) { /* Create default collection */ if ((error = col_create_collection(¤t_section, INI_DEFAULT_SECTION, COL_CLASS_INI_SECTION)) || (error = col_add_collection_to_collection(ini_config, NULL,NULL, current_section, COL_ADD_MODE_REFERENCE))) { TRACE_ERROR_NUMBER("Failed to create collection", error); fclose(file); col_destroy_collection(current_section); if (created) { col_destroy_collection(*error_list); *error_list = NULL; } return error; } } section_count++; } /* Put value into the collection */ error = col_insert_str_property(current_section, NULL, COL_DSP_END, NULL, 0, COL_INSERT_DUPOVER, key, value, length); if (error != EOK) { TRACE_ERROR_NUMBER("Failed to add pair to collection", error); fclose(file); col_destroy_collection(current_section); if (created) { col_destroy_collection(*error_list); *error_list = NULL; } return error; } break; case RET_SECTION: /* Add line to the collection of lines */ if (lines) { /* For easier search make line numbers for the sections negative. * This would allow differentiating sections and attributes. */ error = col_add_int_property(*lines, NULL, key, -1 * line); if (error) { TRACE_ERROR_NUMBER("Failed to add line to line collection", error); fclose(file); col_destroy_collection(current_section); if (created) { col_destroy_collection(*error_list); *error_list = NULL; } return error; } } /* Read a new section */ col_destroy_collection(current_section); current_section = NULL; error = col_get_collection_reference(ini_config, ¤t_section, key); if (error != EOK) { /* Create default collection */ if ((error = col_create_collection(¤t_section, key, COL_CLASS_INI_SECTION)) || (error = col_add_collection_to_collection(ini_config, NULL, NULL, current_section, COL_ADD_MODE_REFERENCE))) { TRACE_ERROR_NUMBER("Failed to add collection", error); fclose(file); col_destroy_collection(current_section); if (created) { col_destroy_collection(*error_list); *error_list = NULL; } return error; } } section_count++; break; case RET_EMPTY: TRACE_INFO_STRING("Empty string", ""); break; case RET_COMMENT: TRACE_INFO_STRING("Comment", ""); break; case RET_ERROR: pe.line = line; pe.error = ext_err; error = col_add_binary_property(*error_list, NULL, ERROR_TXT, &pe, sizeof(pe)); if (error) { TRACE_ERROR_NUMBER("Failed to add error to collection", error); fclose(file); col_destroy_collection(current_section); if (created) { col_destroy_collection(*error_list); *error_list = NULL; } return error; } /* Exit if there was an error parsing file */ if (error_level != INI_STOP_ON_NONE) { TRACE_ERROR_STRING("Invalid format of the file", ""); col_destroy_collection(current_section); fclose(file); return EIO; } break; case RET_INVALID: default: pe.line = line; pe.error = ext_err; error = col_add_binary_property(*error_list, NULL, WARNING_TXT, &pe, sizeof(pe)); if (error) { TRACE_ERROR_NUMBER("Failed to add warning to collection", error); fclose(file); col_destroy_collection(current_section); if (created) { col_destroy_collection(*error_list); *error_list = NULL; } return error; } /* Exit if we are told to exit on warnings */ if (error_level == INI_STOP_ON_ANY) { TRACE_ERROR_STRING("Invalid format of the file", ""); if (created) col_destroy_collection(current_section); fclose(file); return EIO; } TRACE_ERROR_STRING("Invalid string", ""); break; } ext_err = -1; } /* Close file */ fclose(file); COL_DEBUG_COLLECTION(ini_config); col_destroy_collection(current_section); COL_DEBUG_COLLECTION(ini_config); TRACE_FLOW_STRING("ini_to_collection", "Success Exit"); return EOK; } /*********************************************************************/ /* Function to free configuration */ void free_ini_config(struct collection_item *ini_config) { TRACE_FLOW_STRING("free_ini_config", "Entry"); col_destroy_collection(ini_config); TRACE_FLOW_STRING("free_ini_config", "Exit"); } /* Function to free configuration error list */ void free_ini_config_errors(struct collection_item *error_set) { TRACE_FLOW_STRING("free_ini_config_errors", "Entry"); col_destroy_collection(error_set); TRACE_FLOW_STRING("free_ini_config_errors", "Exit"); } /* Function to free configuration lines list */ void free_ini_config_lines(struct collection_item *lines) { TRACE_FLOW_STRING("free_ini_config_lines", "Entry"); col_destroy_collection(lines); TRACE_FLOW_STRING("free_ini_config_lines", "Exit"); } /* Read configuration information from a file */ int config_from_file(const char *application, const char *config_file, struct collection_item **ini_config, int error_level, struct collection_item **error_list) { int error; TRACE_FLOW_STRING("config_from_file", "Entry"); error = config_from_file_with_lines(application, config_file, ini_config, error_level, error_list, NULL); TRACE_FLOW_NUMBER("config_from_file. Returns", error); return error; } /* Function to read the ini file and have a collection * of which item appers on which line */ int config_from_file_with_lines(const char *application, const char *config_file, struct collection_item **ini_config, int error_level, struct collection_item **error_list, struct collection_item **lines) { int error; int created = 0; int created_lines = 0; TRACE_FLOW_STRING("config_from_file", "Entry"); if ((ini_config == NULL) || (application == NULL)) { TRACE_ERROR_NUMBER("Invalid argument", EINVAL); return EINVAL; } /* Create collection if needed */ if (*ini_config == NULL) { error = col_create_collection(ini_config, application, COL_CLASS_INI_CONFIG); if (error != EOK) { TRACE_ERROR_NUMBER("Failed to create collection", error); return error; } created = 1; } /* Is the collection of the right class? */ else if (col_is_of_class(*ini_config, COL_CLASS_INI_CONFIG)) { TRACE_ERROR_NUMBER("Wrong collection type", EINVAL); return EINVAL; } /* Create collection if needed */ if (lines) { /* Make sure that the lines collection is empty */ if (*lines) { TRACE_ERROR_NUMBER("Collection of lines is not empty", EINVAL); if (created) { col_destroy_collection(*ini_config); *ini_config = NULL; } return EINVAL; } error = col_create_collection(lines, application, COL_CLASS_INI_LINES); if (error != EOK) { TRACE_ERROR_NUMBER("Failed to create collection", error); if (created) { col_destroy_collection(*ini_config); *ini_config = NULL; } return error; } created_lines = 1; } /* Do the actual work */ error = ini_to_collection(config_file, *ini_config, error_level, error_list, lines); /* In case of error when we created collection - delete it */ if (error && created) { col_destroy_collection(*ini_config); *ini_config = NULL; } /* Also create collection of lines if we created it */ if (error && created_lines) { col_destroy_collection(*lines); *lines = NULL; } TRACE_FLOW_NUMBER("config_from_file. Returns", error); return error; } /* Read default config file and then overwrite it with a specific one * from the directory */ int config_for_app(const char *application, const char *config_file, const char *config_dir, struct collection_item **ini_config, int error_level, struct collection_item **error_set) { int error = EOK; char *file_name; struct collection_item *error_list_common = NULL; struct collection_item *error_list_specific = NULL; struct collection_item **pass_common = NULL; struct collection_item **pass_specific = NULL; int created = 0; TRACE_FLOW_STRING("config_to_collection", "Entry"); if (ini_config == NULL) { TRACE_ERROR_NUMBER("Failed to create collection", EINVAL); return EINVAL; } /* Prepare error collection pointers */ if (error_set != NULL) { TRACE_INFO_STRING("Error set is not NULL", "preparing error set"); pass_common = &error_list_common; pass_specific = &error_list_specific; *error_set = NULL; /* Construct the overarching error collection */ error = col_create_collection(error_set, FILE_ERROR_SET, COL_CLASS_INI_PESET); if (error != EOK) { TRACE_ERROR_NUMBER("Failed to create collection", error); return error; } } else { TRACE_INFO_STRING("No error set. Errors will not be captured", ""); pass_common = NULL; pass_specific = NULL; } /* Create collection if needed */ if (*ini_config == NULL) { TRACE_INFO_STRING("New config collection. Allocate.", ""); error = col_create_collection(ini_config, application, COL_CLASS_INI_CONFIG); if (error != EOK) { TRACE_ERROR_NUMBER("Failed to create collection", error); col_destroy_collection(*error_set); *error_set = NULL; return error; } } /* Is the collection of the right class? */ else if (col_is_of_class(*ini_config, COL_CLASS_INI_CONFIG)) { TRACE_ERROR_NUMBER("Wrong collection type", EINVAL); return EINVAL; } /* Read master file */ if (config_file != NULL) { TRACE_INFO_STRING("Reading master file:", config_file); error = ini_to_collection(config_file, *ini_config, error_level, pass_common, NULL); /* ENOENT and EOK are Ok */ if (error && (error != ENOENT)) { TRACE_ERROR_NUMBER("Failed to read master file", error); /* In case of error when we created collection - delete it */ if(error && created) { col_destroy_collection(*ini_config); *ini_config = NULL; } /* We do not clear the error_set here */ return error; } /* Add error results if any to the overarching error collection */ if ((pass_common != NULL) && (*pass_common != NULL)) { TRACE_INFO_STRING("Process erros resulting from file:", config_file); error = col_add_collection_to_collection(*error_set, NULL, NULL, *pass_common, COL_ADD_MODE_EMBED); if (error) { if (created) { col_destroy_collection(*ini_config); *ini_config = NULL; } col_destroy_collection(*error_set); *error_set = NULL; TRACE_ERROR_NUMBER("Failed to add error collection to another error collection", error); return error; } } } if (config_dir != NULL) { /* Get specific application file */ file_name = malloc(strlen(config_dir) + strlen(application) + NAME_OVERHEAD); if (file_name == NULL) { error = ENOMEM; TRACE_ERROR_NUMBER("Failed to allocate memory for file name", error); /* In case of error when we created collection - delete it */ if(error && created) { col_destroy_collection(*ini_config); *ini_config = NULL; } col_destroy_collection(*error_set); *error_set = NULL; return error; } sprintf(file_name, "%s%s%s.conf", config_dir, SLASH, application); TRACE_INFO_STRING("Opening file:", file_name); /* Read master file */ error = ini_to_collection(file_name, *ini_config, error_level, pass_specific, NULL); free(file_name); /* ENOENT and EOK are Ok */ if (error && (error != ENOENT)) { TRACE_ERROR_NUMBER("Failed to read specific application file", error); /* In case of error when we created collection - delete it */ if (error && created) { col_destroy_collection(*ini_config); *ini_config = NULL; } /* We do not clear the error_set here */ return error; } /* Add error results if any to the overarching error collection */ if ((pass_specific != NULL) && (*pass_specific != NULL)) { error = col_add_collection_to_collection(*error_set, NULL, NULL, *pass_specific, COL_ADD_MODE_EMBED); if (error) { if (created) { col_destroy_collection(*ini_config); *ini_config = NULL; } col_destroy_collection(*error_set); *error_set = NULL; TRACE_ERROR_NUMBER("Failed to add error collection to another error collection", error); return error; } } } TRACE_FLOW_STRING("config_to_collection", "Exit"); return EOK; } /* Reads a line from the file */ int read_line(FILE *file, char *buf, int read_size, char **key, char **value, int *length, int *ext_error) { char *res; int len; char *buffer; int i; char *eq; TRACE_FLOW_STRING("read_line", "Entry"); *ext_error = 0; buffer = buf; /* Get data from file */ res = fgets(buffer, read_size - 1, file); if (res == NULL) { TRACE_ERROR_STRING("Read nothing", ""); return RET_EOF; } /* Make sure the buffer is NULL terminated */ buffer[read_size - 1] = '\0'; len = strlen(buffer); if (len == 0) { TRACE_ERROR_STRING("Nothing was read.", ""); return RET_EMPTY; } /* Added \r just in case we deal with Windows in future */ if ((buffer[len - 1] != '\n') && (buffer[len - 1] != '\r')) { TRACE_ERROR_STRING("String it too big!", ""); *ext_error = ERR_LONGDATA; return RET_ERROR; } /* Ingnore comments */ if ((*buffer == ';') || (*buffer == '#')) { TRACE_FLOW_STRING("Comment", buf); return RET_COMMENT; } TRACE_INFO_STRING("BUFFER before trimming:", buffer); /* Trucate trailing spaces and CRs */ /* Make sure not to step before the beginning */ while (len && isspace(buffer[len - 1])) { buffer[len - 1] = '\0'; len--; } TRACE_INFO_STRING("BUFFER after trimming trailing spaces:", buffer); /* Trucate leading spaces */ while (isspace(*buffer)) { buffer++; len--; } TRACE_INFO_STRING("BUFFER after trimming leading spaces:", buffer); TRACE_INFO_NUMBER("BUFFER length:", len); /* Empty line */ if (len == 0) { TRACE_FLOW_STRING("Empty line", buf); return RET_EMPTY; } /* Section */ if (*buffer == '[') { if (buffer[len-1] != ']') { TRACE_ERROR_STRING("Invalid format for section", buf); *ext_error = ERR_NOCLOSESEC; return RET_ERROR; } buffer++; len--; while (isspace(*buffer)) { buffer++; len--; } if (len == 0) { TRACE_ERROR_STRING("Invalid format for section", buf); *ext_error = ERR_NOSECTION; return RET_ERROR; } buffer[len - 1] = '\0'; len--; while (isspace(buffer[len - 1])) { buffer[len - 1] = '\0'; len--; } if (len >= MAX_KEY) { TRACE_ERROR_STRING("Section name is too long", buf); *ext_error = ERR_SECTIONLONG; return RET_ERROR; } *key = buffer; return RET_SECTION; } /* Assume we are dealing with the K-V here */ /* Find "=" */ eq = strchr(buffer, '='); if (eq == NULL) { TRACE_ERROR_STRING("No equal sign", buf); *ext_error = ERR_NOEQUAL; return RET_INVALID; } len -= eq-buffer; /* Strip spaces around "=" */ i = eq - buffer - 1; while ((i >= 0) && isspace(buffer[i])) i--; if (i < 0) { TRACE_ERROR_STRING("No key", buf); *ext_error = ERR_NOKEY; return RET_INVALID; } /* Copy key into provided buffer */ if(i >= MAX_KEY) { TRACE_ERROR_STRING("Section name is too long", buf); *ext_error = ERR_LONGKEY; return RET_INVALID; } *key = buffer; buffer[i + 1] = '\0'; TRACE_INFO_STRING("KEY:", *key); eq++; len--; while (isspace(*eq)) { eq++; len--; } *value = eq; /* Make sure we include trailing 0 into data */ *length = len + 1; TRACE_INFO_STRING("VALUE:", *value); TRACE_INFO_NUMBER("LENGTH:", *length); TRACE_FLOW_STRING("read_line", "Exit"); return RET_PAIR; } /* Internal function that prints errors */ static void print_error_list(FILE *file, struct collection_item *error_list, int cclass, char *wrong_col_error, char *failed_to_process, char *error_header, char *line_format, error_fn error_function) { struct collection_iterator *iterator; int error; struct collection_item *item = NULL; struct parse_error *pe; unsigned int count; TRACE_FLOW_STRING("print_error_list", "Entry"); /* If we have something to print print it */ if (error_list == NULL) { TRACE_ERROR_STRING("No error list",""); return; } /* Make sure we go the right collection */ if (!col_is_of_class(error_list, cclass)) { TRACE_ERROR_STRING("Wrong collection class:", wrong_col_error); fprintf(file,"%s\n", wrong_col_error); return; } /* Bind iterator */ error = col_bind_iterator(&iterator, error_list, COL_TRAVERSE_DEFAULT); if (error) { TRACE_ERROR_STRING("Error (bind):", failed_to_process); fprintf(file, "%s\n", failed_to_process); return; } while(1) { /* Loop through a collection */ error = col_iterate_collection(iterator, &item); if (error) { TRACE_ERROR_STRING("Error (iterate):", failed_to_process); fprintf(file, "%s\n", failed_to_process); col_unbind_iterator(iterator); return; } /* Are we done ? */ if (item == NULL) break; /* Process collection header */ if (col_get_item_type(item) == COL_TYPE_COLLECTION) { col_get_collection_count(item, &count); if (count <= 2) break; } else if (col_get_item_type(item) == COL_TYPE_STRING) { fprintf(file, error_header, (char *)col_get_item_data(item)); } else { /* Put error into provided format */ pe = (struct parse_error *)(col_get_item_data(item)); fprintf(file, line_format, col_get_item_property(item, NULL), /* Error or warning */ pe->error, /* Error */ pe->line, /* Line */ error_function(pe->error)); /* Error str */ } } /* Do not forget to unbind iterator - otherwise there will be a leak */ col_unbind_iterator(iterator); TRACE_FLOW_STRING("print_error_list", "Exit"); } /* Print errors and warnings that were detected while parsing one file */ void print_file_parsing_errors(FILE *file, struct collection_item *error_list) { print_error_list(file, error_list, COL_CLASS_INI_PERROR, WRONG_COLLECTION, FAILED_TO_PROCCESS, ERROR_HEADER, LINE_FORMAT, parsing_error_str); } /* Print errors and warnings that were detected while processing grammar */ void print_grammar_errors(FILE *file, struct collection_item *error_list) { print_error_list(file, error_list, COL_CLASS_INI_GERROR, WRONG_GRAMMAR, FAILED_TO_PROC_G, ERROR_HEADER_G, LINE_FORMAT, grammar_error_str); } /* Print errors and warnings that were detected while validating INI file. */ void print_validation_errors(FILE *file, struct collection_item *error_list) { print_error_list(file, error_list, COL_CLASS_INI_VERROR, WRONG_VALIDATION, FAILED_TO_PROC_V, ERROR_HEADER_V, LINE_FORMAT, validation_error_str); } /* Print errors and warnings that were detected while parsing * the whole configuration */ void print_config_parsing_errors(FILE *file, struct collection_item *error_list) { struct collection_iterator *iterator; int error; struct collection_item *item = NULL; struct collection_item *file_errors = NULL; TRACE_FLOW_STRING("print_config_parsing_errors", "Entry"); /* If we have something to print print it */ if (error_list == NULL) { TRACE_ERROR_STRING("No error list", ""); return; } /* Make sure we go the right collection */ if (!col_is_of_class(error_list, COL_CLASS_INI_PESET)) { TRACE_ERROR_STRING("Wrong collection class:", WRONG_COLLECTION); fprintf(file, "%s\n", WRONG_COLLECTION); return; } /* Bind iterator */ error = col_bind_iterator(&iterator, error_list, COL_TRAVERSE_DEFAULT); if (error) { TRACE_ERROR_STRING("Error (bind):", FAILED_TO_PROCCESS); fprintf(file,"%s\n", FAILED_TO_PROCCESS); return; } while(1) { /* Loop through a collection */ error = col_iterate_collection(iterator, &item); if (error) { TRACE_ERROR_STRING("Error (iterate):", FAILED_TO_PROCCESS); fprintf(file, "%s\n", FAILED_TO_PROCCESS); col_unbind_iterator(iterator); return; } /* Are we done ? */ if (item == NULL) break; /* Print per file sets of errors */ if (col_get_item_type(item) == COL_TYPE_COLLECTIONREF) { /* Extract a sub collection */ error = col_get_reference_from_item(item, &file_errors); if (error) { TRACE_ERROR_STRING("Error (extract):", FAILED_TO_PROCCESS); fprintf(file, "%s\n", FAILED_TO_PROCCESS); col_unbind_iterator(iterator); return; } print_file_parsing_errors(file, file_errors); col_destroy_collection(file_errors); } } /* Do not forget to unbind iterator - otherwise there will be a leak */ col_unbind_iterator(iterator); TRACE_FLOW_STRING("print_config_parsing_errors", "Exit"); } /* Function to get value from the configration handle */ int get_config_item(const char *section, const char *name, struct collection_item *ini_config, struct collection_item **item) { int error = EOK; struct collection_item *section_handle = NULL; const char *to_find; char default_section[] = INI_DEFAULT_SECTION; TRACE_FLOW_STRING("get_config_item", "Entry"); /* Do we have the accepting memory ? */ if (item == NULL) { TRACE_ERROR_NUMBER("No buffer - invalid argument.", EINVAL); return EINVAL; } /* Is the collection of a right type */ if (!col_is_of_class(ini_config, COL_CLASS_INI_CONFIG)) { TRACE_ERROR_NUMBER("Wrong collection type", EINVAL); return EINVAL; } *item = NULL; if (section == NULL) to_find = default_section; else to_find = section; TRACE_INFO_STRING("Getting Name:", name); TRACE_INFO_STRING("In Section:", section); /* Get Subcollection */ error = col_get_collection_reference(ini_config, §ion_handle, to_find); /* Check error */ if (error && (error != ENOENT)) { TRACE_ERROR_NUMBER("Failed to get section", error); return error; } /* Did we find a section */ if ((error == ENOENT) || (section_handle == NULL)) { /* We have not found section - return success */ TRACE_FLOW_STRING("get_value_from_config", "No such section"); return EOK; } /* Get item */ error = col_get_item(section_handle, name, COL_TYPE_STRING, COL_TRAVERSE_ONELEVEL, item); /* Make sure we free the section we found */ col_destroy_collection(section_handle); TRACE_FLOW_NUMBER("get_config_item returning", error); return error; } /* Get long value from config item */ long get_long_config_value(struct collection_item *item, int strict, long def, int *error) { const char *str; char *endptr; long val = 0; TRACE_FLOW_STRING("get_long_config_value", "Entry"); /* Do we have the item ? */ if ((item == NULL) || (col_get_item_type(item) != COL_TYPE_STRING)) { TRACE_ERROR_NUMBER("Invalid argument.", EINVAL); if (error) *error = EINVAL; return def; } if (error) *error = EOK; /* Try to parse the value */ str = (const char *)col_get_item_data(item); errno = 0; val = strtol(str, &endptr, 10); /* Check for various possible errors */ if (((errno == ERANGE) && ((val == LONG_MAX) || (val == LONG_MIN))) || ((errno != 0) && (val == 0)) || (endptr == str)) { TRACE_ERROR_NUMBER("Conversion failed", EIO); if (error) *error = EIO; return def; } if (strict && (*endptr != '\0')) { TRACE_ERROR_NUMBER("More characters than expected", EIO); if (error) *error = EIO; val = def; } TRACE_FLOW_NUMBER("get_long_config_value returning", val); return val; } /* Get integer value from config item */ int get_int_config_value(struct collection_item *item, int strict, int def, int *error) { return get_long_config_value(item, strict, def, error); } /* Get unsigned integer value from config item */ unsigned get_unsigned_config_value(struct collection_item *item, int strict, unsigned def, int *error) { return get_long_config_value(item, strict, def, error); } /* Get unsigned long value from config item */ unsigned long get_ulong_config_value(struct collection_item *item, int strict, unsigned long def, int *error) { return get_long_config_value(item, strict, def, error); } /* Get double value */ double get_double_config_value(struct collection_item *item, int strict, double def, int *error) { const char *str; char *endptr; double val = 0; TRACE_FLOW_STRING("get_double_config_value", "Entry"); /* Do we have the item ? */ if ((item == NULL) || (col_get_item_type(item) != COL_TYPE_STRING)) { TRACE_ERROR_NUMBER("Invalid argument.", EINVAL); if (error) *error = EINVAL; return def; } if (error) *error = EOK; /* Try to parse the value */ str = (const char *)col_get_item_data(item); errno = 0; val = strtod(str, &endptr); /* Check for various possible errors */ if ((errno == ERANGE) || ((errno != 0) && (val == 0)) || (endptr == str)) { TRACE_ERROR_NUMBER("Conversion failed", EIO); if (error) *error = EIO; return def; } if (strict && (*endptr != '\0')) { TRACE_ERROR_NUMBER("More characters than expected", EIO); if (error) *error = EIO; val = def; } TRACE_FLOW_NUMBER("get_double_config_value returning", val); return val; } /* Get boolean value */ unsigned char get_bool_config_value(struct collection_item *item, unsigned char def, int *error) { const char *str; int len; TRACE_FLOW_STRING("get_bool_config_value", "Entry"); /* Do we have the item ? */ if ((item == NULL) || (col_get_item_type(item) != COL_TYPE_STRING)) { TRACE_ERROR_NUMBER("Invalid argument.", EINVAL); if (error) *error = EINVAL; return def; } if (error) *error = EOK; str = (const char *)col_get_item_data(item); len = col_get_item_length(item); /* Try to parse the value */ if ((strncasecmp(str, "true", len) == 0) || (strncasecmp(str, "yes", len) == 0)) { TRACE_FLOW_STRING("Returning", "true"); return '\1'; } else if ((strncasecmp(str, "false", len) == 0) || (strncasecmp(str, "no", len) == 0)) { TRACE_FLOW_STRING("Returning", "false"); return '\0'; } TRACE_ERROR_STRING("Returning", "error"); if (error) *error = EIO; return def; } /* Return a string out of the value */ char *get_string_config_value(struct collection_item *item, int *error) { char *str = NULL; TRACE_FLOW_STRING("get_string_config_value", "Entry"); /* Do we have the item ? */ if ((item == NULL) || (col_get_item_type(item) != COL_TYPE_STRING)) { TRACE_ERROR_NUMBER("Invalid argument.", EINVAL); if (error) *error = EINVAL; return NULL; } str = strdup((const char *)col_get_item_data(item)); if (str == NULL) { TRACE_ERROR_NUMBER("Failed to allocate memory.", ENOMEM); if (error) *error = ENOMEM; return NULL; } if (error) *error = EOK; TRACE_FLOW_STRING("get_string_config_value returning", str); return str; } /* Get string from item */ const char *get_const_string_config_value(struct collection_item *item, int *error) { const char *str; TRACE_FLOW_STRING("get_const_string_config_value", "Entry"); /* Do we have the item ? */ if ((item == NULL) || (col_get_item_type(item) != COL_TYPE_STRING)) { TRACE_ERROR_NUMBER("Invalid argument.", EINVAL); if (error) *error = EINVAL; return NULL; } str = (const char *)col_get_item_data(item); if (error) *error = EOK; TRACE_FLOW_STRING("get_const_string_config_value returning", str); return str; } /* A special hex format is assumed. * The string should be taken in single quotes * and consist of hex encoded value two hex digits per byte. * Example: '0A2BFECC' * Case does not matter. */ char *get_bin_config_value(struct collection_item *item, int *length, int *error) { int i; char *value = NULL; const char *buff; int size = 0; unsigned char hex; int len; const char *str; TRACE_FLOW_STRING("get_bin_config_value", "Entry"); /* Do we have the item ? */ if ((item == NULL) || (col_get_item_type(item) != COL_TYPE_STRING)) { TRACE_ERROR_NUMBER("Invalid argument.", EINVAL); if (error) *error = EINVAL; return NULL; } /* Check the length */ len = col_get_item_length(item)-1; if ((len%2) != 0) { TRACE_ERROR_STRING("Invalid length for binary data", ""); if (error) *error = EINVAL; return NULL; } str = (const char *)col_get_item_data(item); /* Is the format correct ? */ if ((*str != '\'') || (str[len -1] != '\'')) { TRACE_ERROR_STRING("String is not escaped",""); if (error) *error = EIO; return NULL; } /* Check that all the symbols are ok */ buff = str + 1; len -= 2; for (i = 0; i < len; i += 2) { if (!isxdigit(buff[i]) || !isxdigit(buff[i + 1])) { TRACE_ERROR_STRING("Invalid encoding for binary data", buff + i); if (error) *error = EIO; return NULL; } } /* The value is good so we can allocate memory for it */ value = malloc(len / 2); if (value == NULL) { TRACE_ERROR_NUMBER("Failed to allocate memory.", ENOMEM); if (error) *error = ENOMEM; return NULL; } /* Convert the value */ for (i = 0; i < len; i += 2) { if (isdigit(buff[i])) { if (isdigit(buff[i+1])) hex = 16 * (buff[i] - '0') + (buff[i+1] - '0'); else hex = 16 * (buff[i] - '0') + (tolower(buff[i+1]) - 'a' + 10); } else { if (isdigit(buff[i+1])) hex = 16 * (tolower(buff[i]) - 'a') + (buff[i+1] - '0'); else hex = 16 * (tolower(buff[i]) - 'a' + 10) + (tolower(buff[i+1]) - 'a' + 10); } value[size] = (char)(hex); size++; } if (error) *error = EOK; if (length) *length = size; TRACE_FLOW_STRING("get_bin_config_value", "Exit"); return value; } /* Function to free binary configuration value */ void free_bin_config_value(char *value) { if (value) free(value); } /* Arrays of stings and integers */ char **get_string_config_array(struct collection_item *item, const char *sep, int *size, int *error) { const char *defsep = ","; char *copy = NULL; char *dest = NULL; int lensep; char *buff; int count = 0; int len = 0; int resume_len; char **array; char *start; int i, j, k; int growlen = 0; int dlen; TRACE_FLOW_STRING("get_string_config_array", "Entry"); /* Do we have the item ? */ if ((item == NULL) || (col_get_item_type(item) != COL_TYPE_STRING)) { TRACE_ERROR_NUMBER("Invalid argument.", EINVAL); if (error) *error = EINVAL; return NULL; } /* Handle the separators */ if (sep == NULL) sep = defsep; lensep = strnlen(sep, 3); /* Allocate memory for the copy of the string */ copy = malloc(col_get_item_length(item)); if (copy == NULL) { TRACE_ERROR_NUMBER("Failed to allocate memory.", ENOMEM); if (error) *error = ENOMEM; return NULL; } /* Loop through the string */ dest = copy; buff = item->data; start = buff; dlen = item->length - 1; for(i = 0; i < dlen; i++) { growlen = 1; for(j = 0; j < lensep; j++) { if(buff[i] == sep[j]) { /* If we found one of the separators trim spaces around */ resume_len = len; while (len > 0) { if (isspace(start[len - 1])) len--; else break; } if (len > 0) { /* Save block aside */ memcpy(dest, start, len); count++; dest += len; *dest = '\0'; dest++; len = 0; } /* Move forward and trim spaces if any */ start += resume_len + 1; i++; TRACE_INFO_STRING("Other pointer :", buff + i); k = 0; while(1) { TRACE_INFO_STRING("Remaining buffer :", start); while (((i + k) < dlen) && (isspace(*start))) { k++; start++; } /* May be we have another separator */ TRACE_INFO_STRING("Remaining before sep check :", start); if(*start && strchr(sep, *start)) { TRACE_INFO_NUMBER("Found separator:", *start); start++; k++; } else { break; } } TRACE_INFO_STRING("Remaining buffer after triming spaces:", start); if (k) i += k - 1; /* Next iteration of the loop will add 1 */ /* Break out of the inner loop */ growlen = 0; break; } } if (growlen) len++; } TRACE_INFO_STRING("Last part :", start); TRACE_INFO_NUMBER("Length :", len); if(len) { /* Copy the remaining piece */ memcpy(dest, start, len); count++; dest += len; *dest = '\0'; dest++; } /* Now we know how many items are there in the list */ array = malloc((count + 1) * sizeof(char *)); if (array == NULL) { free(copy); TRACE_ERROR_NUMBER("Failed to allocate memory.", ENOMEM); if (error) *error = ENOMEM; return NULL; } /* Loop again to fill in the pointers */ start = copy; for (i = 0; i < count; i++) { TRACE_INFO_STRING("Token :", start); TRACE_INFO_NUMBER("Item :", i); array[i] = start; /* Move to next item */ while(*start) start++; start++; } array[count] = NULL; if (error) *error = EOK; if (size) *size = count; TRACE_FLOW_STRING("get_string_config_array", "Exit"); return array; } /* Special function to free string config array */ void free_string_config_array(char **str_config) { TRACE_FLOW_STRING("free_string_config_array", "Entry"); if (str_config != NULL) { if (*str_config != NULL) free(*str_config); free(str_config); } TRACE_FLOW_STRING("free_string_config_array", "Exit"); } /* Get an array of long values */ long *get_long_config_array(struct collection_item *item, int *size, int *error) { const char *str; char *endptr; long val = 0; long *array; int count = 0; TRACE_FLOW_STRING("get_long_config_array", "Entry"); /* Do we have the item ? */ if ((item == NULL) || (col_get_item_type(item) != COL_TYPE_STRING) || (size == NULL)) { TRACE_ERROR_NUMBER("Invalid argument.", EINVAL); if (error) *error = EINVAL; return NULL; } /* Assume that we have maximum number of different numbers */ array = (long *)malloc(sizeof(long) * col_get_item_length(item)/2); if (array == NULL) { TRACE_ERROR_NUMBER("Failed to allocate memory.", ENOMEM); if (error) *error = ENOMEM; return NULL; } /* Now parse the string */ str = (const char *)col_get_item_data(item); while (*str) { errno = 0; val = strtol(str, &endptr, 10); if (((errno == ERANGE) && ((val == LONG_MAX) || (val == LONG_MIN))) || ((errno != 0) && (val == 0)) || (endptr == str)) { TRACE_ERROR_NUMBER("Conversion failed", EIO); free(array); if (error) *error = EIO; return NULL; } /* Save value */ array[count] = val; count++; /* Are we done? */ if (*endptr == 0) break; /* Advance to the next valid number */ for (str = endptr; *str; str++) { if (isdigit(*str) || (*str == '-') || (*str == '+')) break; } } *size = count; if (error) *error = EOK; TRACE_FLOW_NUMBER("get_long_config_value returning", val); return array; } /* Get an array of double values */ double *get_double_config_array(struct collection_item *item, int *size, int *error) { const char *str; char *endptr; double val = 0; double *array; int count = 0; struct lconv *loc; TRACE_FLOW_STRING("get_double_config_array", "Entry"); /* Do we have the item ? */ if ((item == NULL) || (col_get_item_type(item) != COL_TYPE_STRING) || (size == NULL)) { TRACE_ERROR_NUMBER("Invalid argument.", EINVAL); if (error) *error = EINVAL; return NULL; } /* Assume that we have maximum number of different numbers */ array = (double *)malloc(sizeof(double) * col_get_item_length(item)/2); if (array == NULL) { TRACE_ERROR_NUMBER("Failed to allocate memory.", ENOMEM); if (error) *error = ENOMEM; return NULL; } /* Get locale information so that we can check for decimal point character. * Based on the man pages it is unclear if this is an allocated memory or not. * Seems like it is a static thread or process local structure so * I will not try to free it after use. */ loc = localeconv(); /* Now parse the string */ str = (const char *)col_get_item_data(item); while (*str) { TRACE_INFO_STRING("String to convert",str); errno = 0; val = strtod(str, &endptr); if ((errno == ERANGE) || ((errno != 0) && (val == 0)) || (endptr == str)) { TRACE_ERROR_NUMBER("Conversion failed", EIO); free(array); if (error) *error = EIO; return NULL; } /* Save value */ array[count] = val; count++; /* Are we done? */ if (*endptr == 0) break; TRACE_INFO_STRING("End pointer after conversion",endptr); /* Advance to the next valid number */ for (str = endptr; *str; str++) { if (isdigit(*str) || (*str == '-') || (*str == '+') || /* It is ok to do this since the string is null terminated */ ((*str == *(loc->decimal_point)) && isdigit(str[1]))) break; } } *size = count; if (error) *error = EOK; TRACE_FLOW_NUMBER("get_double_config_value returning", val); return array; } /* Special function to free long config array */ void free_long_config_array(long *array) { if (array != NULL) free(array); } /* Special function to free double config array */ void free_double_config_array(double *array) { if (array != NULL) free(array); } /* The section array should be freed using this function */ void free_section_list(char **section_list) { TRACE_FLOW_STRING("free_section_list","Entry"); col_free_property_list(section_list); TRACE_FLOW_STRING("free_section_list","Exit"); } /* The section array should be freed using this function */ void free_attribute_list(char **section_list) { TRACE_FLOW_STRING("free_section_list","Entry"); col_free_property_list(section_list); TRACE_FLOW_STRING("free_section_list","Exit"); } /* Get list of sections as an array of strings. * Function allocates memory for the array of the sections. */ char **get_section_list(struct collection_item *ini_config, int *size, int *error) { char **list; TRACE_FLOW_STRING("get_section_list","Entry"); /* Do we have the item ? */ if ((ini_config == NULL) || !col_is_of_class(ini_config, COL_CLASS_INI_CONFIG)) { TRACE_ERROR_NUMBER("Invalid argument.", EINVAL); if (error) *error = EINVAL; return NULL; } /* Pass it to the function from collection API */ list = col_collection_to_list(ini_config, size, error); TRACE_FLOW_STRING("get_section_list returning", ((list == NULL) ? "NULL" : list[0])); return list; } /* Get list of attributes in a section as an array of strings. * Function allocates memory for the array of the strings. */ char **get_attribute_list(struct collection_item *ini_config, const char *section, int *size, int *error) { struct collection_item *subcollection = NULL; char **list; int err; TRACE_FLOW_STRING("get_attribute_list","Entry"); /* Do we have the item ? */ if ((ini_config == NULL) || !col_is_of_class(ini_config, COL_CLASS_INI_CONFIG) || (section == NULL)) { TRACE_ERROR_NUMBER("Invalid argument.", EINVAL); if (error) *error = EINVAL; return NULL; } /* Fetch section */ err = col_get_collection_reference(ini_config, &subcollection, section); /* Check error */ if (err && (subcollection == NULL)) { TRACE_ERROR_NUMBER("Failed to get section", err); if (error) *error = EINVAL; return NULL; } /* Pass it to the function from collection API */ list = col_collection_to_list(subcollection, size, error); col_destroy_collection(subcollection); TRACE_FLOW_STRING("get_attribute_list returning", ((list == NULL) ? "NULL" : list[0])); return list; }