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 | 388 |
1 files changed, 0 insertions, 388 deletions
diff --git a/src/settings/plugins/ifupdown/nms-ifupdown-interface-parser.c b/src/settings/plugins/ifupdown/nms-ifupdown-interface-parser.c deleted file mode 100644 index 219490b8..00000000 --- a/src/settings/plugins/ifupdown/nms-ifupdown-interface-parser.c +++ /dev/null @@ -1,388 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0+ */ -/* - * Tom Parker <palfrey@tevp.net> - * Copyright (C) 2004 Tom Parker - */ - -#include "nm-default.h" - -#include "nms-ifupdown-interface-parser.h" - -#include <stdio.h> -#include <stdlib.h> -#include <wordexp.h> -#include <libgen.h> - -#include "nm-utils.h" - -/*****************************************************************************/ - -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__)) - -/*****************************************************************************/ - -static void -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); -} - -static void -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; - - 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; - - 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); - - /* 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); -} - -/* join values in src with spaces into dst; dst needs to be large enough */ -static char * -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); -} - -static void -_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; - } - -#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); -} - -static void -_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); -} - -if_parser * -ifparser_parse(const char *eni_file, int quiet) -{ - if_parser *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) -{ - c_list_unlink_stale(&ifd->data_lst); - g_free(ifd); -} - -static void -_destroy_block(if_block *ifb) -{ - 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); -} - -void -ifparser_destroy(if_parser *parser) -{ - 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); -} - -if_block * -ifparser_getfirst(if_parser *parser) -{ - return c_list_first_entry(&parser->block_lst_head, if_block, block_lst); -} - -guint -ifparser_get_num_blocks(if_parser *parser) -{ - return c_list_length(&parser->block_lst_head); -} - -if_block * -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; -} - -static if_data * -ifparser_findkey(if_block *iface, const char *key) -{ - 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; -} - -const char * -ifparser_getkey(if_block *iface, const char *key) -{ - if_data *ifd; - - ifd = ifparser_findkey(iface, key); - return ifd ? ifd->data : NULL; -} - -gboolean -ifparser_haskey(if_block *iface, const char *key) -{ - return !!ifparser_findkey(iface, key); -} - -guint -ifparser_get_num_info(if_block *iface) -{ - return c_list_length(&iface->data_lst_head); -} |