diff options
Diffstat (limited to 'src/settings/plugins/ifupdown/nms-ifupdown-interface-parser.c')
| -rw-r--r-- | src/settings/plugins/ifupdown/nms-ifupdown-interface-parser.c | 579 |
1 files changed, 287 insertions, 292 deletions
diff --git a/src/settings/plugins/ifupdown/nms-ifupdown-interface-parser.c b/src/settings/plugins/ifupdown/nms-ifupdown-interface-parser.c index a146ae60..219490b8 100644 --- a/src/settings/plugins/ifupdown/nms-ifupdown-interface-parser.c +++ b/src/settings/plugins/ifupdown/nms-ifupdown-interface-parser.c @@ -1,4 +1,4 @@ -// SPDX-License-Identifier: GPL-2.0+ +/* SPDX-License-Identifier: GPL-2.0+ */ /* * Tom Parker <palfrey@tevp.net> * Copyright (C) 2004 Tom Parker @@ -17,377 +17,372 @@ /*****************************************************************************/ -static void _ifparser_source (if_parser *parser, const char *path, const char *en_dir, int quiet, int dir); +static void +_ifparser_source(if_parser *parser, const char *path, const char *en_dir, int quiet, int dir); /*****************************************************************************/ -#define _NMLOG_PREFIX_NAME "ifupdown" -#define _NMLOG_DOMAIN LOGD_SETTINGS -#define _NMLOG(level, ...) \ - nm_log ((level), _NMLOG_DOMAIN, NULL, NULL, \ - "%s" _NM_UTILS_MACRO_FIRST (__VA_ARGS__), \ - _NMLOG_PREFIX_NAME": " \ - _NM_UTILS_MACRO_REST (__VA_ARGS__)) +#define _NMLOG_PREFIX_NAME "ifupdown" +#define _NMLOG_DOMAIN LOGD_SETTINGS +#define _NMLOG(level, ...) \ + nm_log((level), \ + _NMLOG_DOMAIN, \ + NULL, \ + NULL, \ + "%s" _NM_UTILS_MACRO_FIRST(__VA_ARGS__), \ + _NMLOG_PREFIX_NAME ": " _NM_UTILS_MACRO_REST(__VA_ARGS__)) /*****************************************************************************/ static void -add_block (if_parser *parser, const char *type, const char* name) +add_block(if_parser *parser, const char *type, const char *name) { - if_block *ifb; - gsize l_type, l_name; - - l_type = strlen (type) + 1; - l_name = strlen (name) + 1; - - ifb = g_malloc (sizeof (if_block) + l_type + l_name); - memcpy ((char *) ifb->name, name, l_name); - ifb->type = &ifb->name[l_name]; - memcpy ((char *) ifb->type, type, l_type); - c_list_init (&ifb->data_lst_head); - c_list_link_tail (&parser->block_lst_head, &ifb->block_lst); + if_block *ifb; + gsize l_type, l_name; + + l_type = strlen(type) + 1; + l_name = strlen(name) + 1; + + ifb = g_malloc(sizeof(if_block) + l_type + l_name); + memcpy((char *) ifb->name, name, l_name); + ifb->type = &ifb->name[l_name]; + memcpy((char *) ifb->type, type, l_type); + c_list_init(&ifb->data_lst_head); + c_list_link_tail(&parser->block_lst_head, &ifb->block_lst); } static void -add_data (if_parser *parser, const char *key, const char *data) +add_data(if_parser *parser, const char *key, const char *data) { - if_block *last_block; - if_data *ifd; - char *idx; - gsize l_key, l_data; + if_block *last_block; + if_data * ifd; + char * idx; + gsize l_key, l_data; - last_block = c_list_last_entry (&parser->block_lst_head, if_block, block_lst); + last_block = c_list_last_entry(&parser->block_lst_head, if_block, block_lst); - /* Check if there is a block where we can attach our data */ - if (!last_block) - return; + /* Check if there is a block where we can attach our data */ + if (!last_block) + return; - l_key = strlen (key) + 1; - l_data = strlen (data) + 1; + l_key = strlen(key) + 1; + l_data = strlen(data) + 1; - ifd = g_malloc (sizeof (if_data) + l_key + l_data); - memcpy ((char *) ifd->key, key, l_key); - ifd->data = &ifd->key[l_key]; - memcpy ((char *) ifd->data, data, l_data); + ifd = g_malloc(sizeof(if_data) + l_key + l_data); + memcpy((char *) ifd->key, key, l_key); + ifd->data = &ifd->key[l_key]; + memcpy((char *) ifd->data, data, l_data); - /* Normalize keys. Convert '_' to '-', as ifupdown accepts both variants. - * When querying keys via ifparser_getkey(), use '-'. */ - idx = (char *) ifd->key; - while ((idx = strchr (idx, '_'))) - *(idx++) = '-'; + /* Normalize keys. Convert '_' to '-', as ifupdown accepts both variants. + * When querying keys via ifparser_getkey(), use '-'. */ + idx = (char *) ifd->key; + while ((idx = strchr(idx, '_'))) + *(idx++) = '-'; - c_list_link_tail (&last_block->data_lst_head, &ifd->data_lst); + c_list_link_tail(&last_block->data_lst_head, &ifd->data_lst); } /* join values in src with spaces into dst; dst needs to be large enough */ static char * -join_values_with_spaces (char *dst, char **src) +join_values_with_spaces(char *dst, char **src) { - if (dst != NULL) { - *dst = '\0'; - if (src != NULL && *src != NULL) { - strcat (dst, *src); - - for (src++; *src != NULL; src++) { - strcat (dst, " "); - strcat (dst, *src); - } - } - } - return (dst); + if (dst != NULL) { + *dst = '\0'; + if (src != NULL && *src != NULL) { + strcat(dst, *src); + + for (src++; *src != NULL; src++) { + strcat(dst, " "); + strcat(dst, *src); + } + } + } + return (dst); } static void -_recursive_ifparser (if_parser *parser, const char *eni_file, int quiet) +_recursive_ifparser(if_parser *parser, const char *eni_file, int quiet) { - FILE *inp; - char line[255]; - int skip_to_block = 1; - int skip_long_line = 0; - int offs = 0; - - /* Check if interfaces file exists and open it */ - if (!g_file_test (eni_file, G_FILE_TEST_EXISTS)) { - if (!quiet) - _LOGW ("interfaces file %s doesn't exist", eni_file); - return; - } - inp = fopen (eni_file, "re"); - if (inp == NULL) { - if (!quiet) - _LOGW ("Can't open %s", eni_file); - return; - } - if (!quiet) - _LOGI (" interface-parser: parsing file %s", eni_file); - - while (!feof (inp)) { - char *token[128]; /* 255 chars can only be split into 127 tokens */ - char value[255]; /* large enough to join previously split tokens */ - char *safeptr; - int toknum; - int len = 0; - - char *ptr = fgets (line+offs, 255-offs, inp); - if (ptr == NULL) - break; - - len = strlen (line); - /* skip over-long lines */ - if (!feof (inp) && len > 0 && line[len-1] != '\n') { - if (!skip_long_line) { - if (!quiet) - _LOGW ("Skipping over-long-line '%s...'", line); - } - skip_long_line = 1; - continue; - } - - /* trailing '\n' found: remove it & reset offset to 0 */ - if (len > 0 && line[len-1] == '\n') { - line[--len] = '\0'; - offs = 0; - } - - /* if we're in long_line_skip mode, terminate it for real next line */ - if (skip_long_line) { - if (len == 0 || line[len-1] != '\\') - skip_long_line = 0; - continue; - } - - /* unwrap wrapped lines */ - if (len > 0 && line[len-1] == '\\') { - offs = len - 1; - continue; - } + FILE *inp; + char line[255]; + int skip_to_block = 1; + int skip_long_line = 0; + int offs = 0; + + /* Check if interfaces file exists and open it */ + if (!g_file_test(eni_file, G_FILE_TEST_EXISTS)) { + if (!quiet) + _LOGW("interfaces file %s doesn't exist", eni_file); + return; + } + inp = fopen(eni_file, "re"); + if (inp == NULL) { + if (!quiet) + _LOGW("Can't open %s", eni_file); + return; + } + if (!quiet) + _LOGI(" interface-parser: parsing file %s", eni_file); + + while (!feof(inp)) { + char *token[128]; /* 255 chars can only be split into 127 tokens */ + char value[255]; /* large enough to join previously split tokens */ + char *safeptr; + int toknum; + int len = 0; + + char *ptr = fgets(line + offs, 255 - offs, inp); + if (ptr == NULL) + break; + + len = strlen(line); + /* skip over-long lines */ + if (!feof(inp) && len > 0 && line[len - 1] != '\n') { + if (!skip_long_line) { + if (!quiet) + _LOGW("Skipping over-long-line '%s...'", line); + } + skip_long_line = 1; + continue; + } + + /* trailing '\n' found: remove it & reset offset to 0 */ + if (len > 0 && line[len - 1] == '\n') { + line[--len] = '\0'; + offs = 0; + } + + /* if we're in long_line_skip mode, terminate it for real next line */ + if (skip_long_line) { + if (len == 0 || line[len - 1] != '\\') + skip_long_line = 0; + continue; + } + + /* unwrap wrapped lines */ + if (len > 0 && line[len - 1] == '\\') { + offs = len - 1; + continue; + } #define SPACES " \t" - /* tokenize input; */ - for (toknum = 0, token[toknum] = strtok_r (line, SPACES, &safeptr); - token[toknum] != NULL; - toknum++, token[toknum] = strtok_r (NULL, SPACES, &safeptr)) - ; - - /* ignore comments and empty lines */ - if (toknum == 0 || *token[0]=='#') - continue; - - if (toknum < 2) { - if (!quiet) { - _LOGW ("Can't parse interface line '%s'", - join_values_with_spaces (value, token)); - } - skip_to_block = 1; - continue; - } - - /* There are six different stanzas: - * iface, mapping, auto, allow-*, source, and source-directory. - * Create a block for each of them except source and source-directory. */ - - /* iface stanza takes at least 3 parameters */ - if (nm_streq (token[0], "iface")) { - if (toknum < 4) { - if (!quiet) { - _LOGW ("Can't parse iface line '%s'", - join_values_with_spaces (value, token)); - } - continue; - } - add_block (parser, token[0], token[1]); - skip_to_block = 0; - add_data (parser, token[2], join_values_with_spaces (value, token + 3)); - } - /* auto and allow-auto stanzas are equivalent, - * both can take multiple interfaces as parameters: add one block for each */ - else if (NM_IN_STRSET (token[0], "auto", "allow-auto")) { - int i; - - for (i = 1; i < toknum; i++) - add_block (parser, "auto", token[i]); - skip_to_block = 0; - } - else if (nm_streq (token[0], "mapping")) { - add_block (parser, token[0], join_values_with_spaces (value, token + 1)); - skip_to_block = 0; - } - /* allow-* can take multiple interfaces as parameters: add one block for each */ - else if (g_str_has_prefix (token[0], "allow-")) { - int i; - for (i = 1; i < toknum; i++) - add_block (parser, token[0], token[i]); - skip_to_block = 0; - } - /* source and source-directory stanzas take one or more paths as parameters */ - else if (NM_IN_STRSET (token[0], "source", "source-directory")) { - int i; - char *en_dir; - - skip_to_block = 0; - en_dir = g_path_get_dirname (eni_file); - for (i = 1; i < toknum; ++i) { - if (nm_streq (token[0], "source-directory")) - _ifparser_source (parser, token[i], en_dir, quiet, TRUE); - else - _ifparser_source (parser, token[i], en_dir, quiet, FALSE); - } - g_free (en_dir); - } - else { - if (skip_to_block) { - if (!quiet) { - _LOGW ("ignoring out-of-block data '%s'", - join_values_with_spaces (value, token)); - } - } else - add_data (parser, token[0], join_values_with_spaces (value, token + 1)); - } - } - fclose (inp); - - if (!quiet) - _LOGI (" interface-parser: finished parsing file %s", eni_file); + /* tokenize input; */ + for (toknum = 0, token[toknum] = strtok_r(line, SPACES, &safeptr); token[toknum] != NULL; + toknum++, token[toknum] = strtok_r(NULL, SPACES, &safeptr)) + ; + + /* ignore comments and empty lines */ + if (toknum == 0 || *token[0] == '#') + continue; + + if (toknum < 2) { + if (!quiet) { + _LOGW("Can't parse interface line '%s'", join_values_with_spaces(value, token)); + } + skip_to_block = 1; + continue; + } + + /* There are six different stanzas: + * iface, mapping, auto, allow-*, source, and source-directory. + * Create a block for each of them except source and source-directory. */ + + /* iface stanza takes at least 3 parameters */ + if (nm_streq(token[0], "iface")) { + if (toknum < 4) { + if (!quiet) { + _LOGW("Can't parse iface line '%s'", join_values_with_spaces(value, token)); + } + continue; + } + add_block(parser, token[0], token[1]); + skip_to_block = 0; + add_data(parser, token[2], join_values_with_spaces(value, token + 3)); + } + /* auto and allow-auto stanzas are equivalent, + * both can take multiple interfaces as parameters: add one block for each */ + else if (NM_IN_STRSET(token[0], "auto", "allow-auto")) { + int i; + + for (i = 1; i < toknum; i++) + add_block(parser, "auto", token[i]); + skip_to_block = 0; + } else if (nm_streq(token[0], "mapping")) { + add_block(parser, token[0], join_values_with_spaces(value, token + 1)); + skip_to_block = 0; + } + /* allow-* can take multiple interfaces as parameters: add one block for each */ + else if (g_str_has_prefix(token[0], "allow-")) { + int i; + for (i = 1; i < toknum; i++) + add_block(parser, token[0], token[i]); + skip_to_block = 0; + } + /* source and source-directory stanzas take one or more paths as parameters */ + else if (NM_IN_STRSET(token[0], "source", "source-directory")) { + int i; + char *en_dir; + + skip_to_block = 0; + en_dir = g_path_get_dirname(eni_file); + for (i = 1; i < toknum; ++i) { + if (nm_streq(token[0], "source-directory")) + _ifparser_source(parser, token[i], en_dir, quiet, TRUE); + else + _ifparser_source(parser, token[i], en_dir, quiet, FALSE); + } + g_free(en_dir); + } else { + if (skip_to_block) { + if (!quiet) { + _LOGW("ignoring out-of-block data '%s'", join_values_with_spaces(value, token)); + } + } else + add_data(parser, token[0], join_values_with_spaces(value, token + 1)); + } + } + fclose(inp); + + if (!quiet) + _LOGI(" interface-parser: finished parsing file %s", eni_file); } static void -_ifparser_source (if_parser *parser, const char *path, const char *en_dir, int quiet, int dir) +_ifparser_source(if_parser *parser, const char *path, const char *en_dir, int quiet, int dir) { - char *abs_path; - const char *item; - wordexp_t we; - GDir *source_dir; - GError *error = NULL; - uint i; - - if (g_path_is_absolute (path)) - abs_path = g_strdup (path); - else - abs_path = g_build_filename (en_dir, path, NULL); - - if (!quiet) - _LOGI (" interface-parser: source line includes interfaces file(s) %s", abs_path); - - /* ifupdown uses WRDE_NOCMD for wordexp. */ - if (wordexp (abs_path, &we, WRDE_NOCMD)) { - if (!quiet) - _LOGW ("word expansion for %s failed", abs_path); - } else { - for (i = 0; i < we.we_wordc; i++) { - if (dir) { - source_dir = g_dir_open (we.we_wordv[i], 0, &error); - if (!source_dir) { - if (!quiet) { - _LOGW ("Failed to open directory %s: %s", - we.we_wordv[i], error->message); - } - g_clear_error (&error); - } else { - while ((item = g_dir_read_name (source_dir))) - _ifparser_source (parser, item, we.we_wordv[i], quiet, FALSE); - g_dir_close (source_dir); - } - } else - _recursive_ifparser (parser, we.we_wordv[i], quiet); - } - wordfree (&we); - } - g_free (abs_path); + char * abs_path; + const char *item; + wordexp_t we; + GDir * source_dir; + GError * error = NULL; + uint i; + + if (g_path_is_absolute(path)) + abs_path = g_strdup(path); + else + abs_path = g_build_filename(en_dir, path, NULL); + + if (!quiet) + _LOGI(" interface-parser: source line includes interfaces file(s) %s", abs_path); + + /* ifupdown uses WRDE_NOCMD for wordexp. */ + if (wordexp(abs_path, &we, WRDE_NOCMD)) { + if (!quiet) + _LOGW("word expansion for %s failed", abs_path); + } else { + for (i = 0; i < we.we_wordc; i++) { + if (dir) { + source_dir = g_dir_open(we.we_wordv[i], 0, &error); + if (!source_dir) { + if (!quiet) { + _LOGW("Failed to open directory %s: %s", we.we_wordv[i], error->message); + } + g_clear_error(&error); + } else { + while ((item = g_dir_read_name(source_dir))) + _ifparser_source(parser, item, we.we_wordv[i], quiet, FALSE); + g_dir_close(source_dir); + } + } else + _recursive_ifparser(parser, we.we_wordv[i], quiet); + } + wordfree(&we); + } + g_free(abs_path); } if_parser * -ifparser_parse (const char *eni_file, int quiet) +ifparser_parse(const char *eni_file, int quiet) { - if_parser *parser; + if_parser *parser; - parser = g_slice_new (if_parser); - c_list_init (&parser->block_lst_head); - _recursive_ifparser (parser, eni_file, quiet); - return parser; + parser = g_slice_new(if_parser); + c_list_init(&parser->block_lst_head); + _recursive_ifparser(parser, eni_file, quiet); + return parser; } static void -_destroy_data (if_data *ifd) +_destroy_data(if_data *ifd) { - c_list_unlink_stale (&ifd->data_lst); - g_free (ifd); + c_list_unlink_stale(&ifd->data_lst); + g_free(ifd); } static void -_destroy_block (if_block* ifb) +_destroy_block(if_block *ifb) { - if_data *ifd; + if_data *ifd; - while ((ifd = c_list_first_entry (&ifb->data_lst_head, if_data, data_lst))) - _destroy_data (ifd); - c_list_unlink_stale (&ifb->block_lst); - g_free (ifb); + while ((ifd = c_list_first_entry(&ifb->data_lst_head, if_data, data_lst))) + _destroy_data(ifd); + c_list_unlink_stale(&ifb->block_lst); + g_free(ifb); } void -ifparser_destroy (if_parser *parser) +ifparser_destroy(if_parser *parser) { - if_block *ifb; + if_block *ifb; - while ((ifb = c_list_first_entry (&parser->block_lst_head, if_block, block_lst))) - _destroy_block (ifb); - g_slice_free (if_parser, parser); + while ((ifb = c_list_first_entry(&parser->block_lst_head, if_block, block_lst))) + _destroy_block(ifb); + g_slice_free(if_parser, parser); } if_block * -ifparser_getfirst (if_parser *parser) +ifparser_getfirst(if_parser *parser) { - return c_list_first_entry (&parser->block_lst_head, if_block, block_lst); + return c_list_first_entry(&parser->block_lst_head, if_block, block_lst); } guint -ifparser_get_num_blocks (if_parser *parser) +ifparser_get_num_blocks(if_parser *parser) { - return c_list_length (&parser->block_lst_head); + return c_list_length(&parser->block_lst_head); } if_block * -ifparser_getif (if_parser *parser, const char* iface) +ifparser_getif(if_parser *parser, const char *iface) { - if_block *ifb; - - c_list_for_each_entry (ifb, &parser->block_lst_head, block_lst) { - if ( nm_streq (ifb->type, "iface") - && nm_streq (ifb->name, iface)) - return ifb; - } - return NULL; + if_block *ifb; + + c_list_for_each_entry (ifb, &parser->block_lst_head, block_lst) { + if (nm_streq(ifb->type, "iface") && nm_streq(ifb->name, iface)) + return ifb; + } + return NULL; } static if_data * -ifparser_findkey (if_block* iface, const char *key) +ifparser_findkey(if_block *iface, const char *key) { - if_data *ifd; + if_data *ifd; - c_list_for_each_entry (ifd, &iface->data_lst_head, data_lst) { - if (nm_streq (ifd->key, key)) - return ifd; - } - return NULL; + c_list_for_each_entry (ifd, &iface->data_lst_head, data_lst) { + if (nm_streq(ifd->key, key)) + return ifd; + } + return NULL; } const char * -ifparser_getkey (if_block* iface, const char *key) +ifparser_getkey(if_block *iface, const char *key) { - if_data *ifd; + if_data *ifd; - ifd = ifparser_findkey (iface, key); - return ifd ? ifd->data : NULL; + ifd = ifparser_findkey(iface, key); + return ifd ? ifd->data : NULL; } gboolean -ifparser_haskey (if_block* iface, const char *key) +ifparser_haskey(if_block *iface, const char *key) { - return !!ifparser_findkey (iface, key); + return !!ifparser_findkey(iface, key); } guint -ifparser_get_num_info (if_block* iface) +ifparser_get_num_info(if_block *iface) { - return c_list_length (&iface->data_lst_head); + return c_list_length(&iface->data_lst_head); } |