src/config.c

   1 #include <string.h>
   2 #include <errno.h>
   3 #include <stdlib.h>
   4 #include <unistd.h>
   5 #include <uci.h>
   6
   7 #include "config.h"
   8 #include "log.h"
   9
  10 static int uci_create_named_section(struct uci_context *ctx,
  11                                 const char *conf_file_name,
  12                                 const char *section_type,
  13                                 const char *section_name)
  14 {
  15         struct uci_ptr  ptr;
  16         int             ret_val;
  17         char            *cmd_data;
  18         int             len;
  19
  20         ret_val = -1;
  21         if ((ctx != NULL) &&
  22             (conf_file_name != NULL) &&
  23             (section_type != NULL) &&
  24             (section_name != NULL)) {
  25                 len             = strlen(conf_file_name);
  26                 len             = len + 1;
  27                 len             = len + strlen(section_type);
  28                 len             = len + 1;
  29                 len             = len + strlen(section_name);
  30                 len             = len + 1;
  31                 cmd_data        = malloc(len);
  32                 if (cmd_data != NULL) {
  33                         snprintf(cmd_data, len, "%s.%s=%s", conf_file_name, section_name, section_type);
  34                         if (uci_lookup_ptr(ctx, &ptr, cmd_data, true) == UCI_OK) {
  35                                 ret_val = uci_set(ctx, &ptr);
  36                                 if (ret_val == UCI_OK) {
  37                                         ret_val = uci_save(ctx, ptr.p);
  38                                 }
  39                         }
  40                         free(cmd_data);
  41                 }
  42         }
  43         return ret_val;
  44 }
  45
  46 bool set_config_value_to_section(const char *conf_dir_name,
  47                         const char *conf_file_name,
  48                         const char *section_type,
  49                         const char *section_name,
  50                         const char *key,
  51                         const char *value) {
  52         struct uci_context      *ctx;
  53         struct uci_package      *pkg;
  54         struct uci_section      *sct;
  55         struct uci_section      *tmp_sct;
  56         int                     err_flg;
  57         char                    *fname;
  58         int                     b_count;
  59         struct uci_element      *elem;
  60         struct uci_ptr          ptr;
  61         FILE                    *fp;
  62         bool                    ret_val;
  63
  64         ret_val = false;
  65         if ((conf_dir_name != NULL) &&
  66             (conf_file_name != NULL) &&
  67             (section_type != NULL) &&
  68             (section_name != NULL) &&
  69             (key != NULL) &&
  70             (value != NULL)) {
  71                 b_count = strlen(conf_dir_name) + strlen(conf_file_name) + 10;
  72                 fname   = (char *)calloc(1, b_count);
  73                 if (fname != NULL) {
  74                         strncpy(fname, conf_dir_name, b_count);
  75                         strncat(fname, "/", 1);
  76                         strncat(fname, conf_file_name, strlen(conf_file_name) + 1);
  77                         ctx     = uci_alloc_context();
  78                         if (ctx != NULL) {
  79                                 sct     = NULL;
  80                                 uci_set_confdir(ctx, conf_dir_name);
  81                                 if (access(fname, W_OK) != 0) {
  82                                         if (access(fname, F_OK) != 0) {
  83                                                 fp      = fopen(fname, "w+");
  84                                                 fclose(fp);
  85                                         }
  86                                 }
  87                                 if (access(fname, W_OK) == 0) {
  88                                         err_flg = uci_load(ctx, fname, &pkg);
  89                                         uci_foreach_element(&pkg->sections, elem) {
  90                                                 tmp_sct = uci_to_section(elem);
  91                                                 if (strcmp(tmp_sct->type, section_type) == 0) {
  92                                                         sct     = tmp_sct;
  93                                                         break;
  94                                                 }
  95                                         }
  96                                         if (sct == NULL) {
  97                                                 log_debug("Creating new section %s to configuration file: %s\n", section_name, fname);
  98                                                 //err_flg       = uci_add_named_section(ctx, pkg, section_type, section_name, &sct);
  99                                                 //err_flg       = uci_add_section(ctx, pkg, section_name, &sct);
 100                                                 err_flg = uci_create_named_section(ctx,
 101                                                                         conf_file_name,
 102                                                                         section_type,
 103                                                                         section_name);
 104                                                 if (err_flg == UCI_OK) {
 105                                                         uci_foreach_element(&pkg->sections, elem) {
 106                                                                 tmp_sct = uci_to_section(elem);
 107                                                                 if (strcmp(tmp_sct->type, section_type) == 0) {
 108                                                                         sct     = tmp_sct;
 109                                                                         break;
 110                                                                 }
 111                                                         }
 112                                                 }
 113                                         }
 114                                         if (err_flg == UCI_OK) {
 115                                                 memset(&ptr, 0, sizeof(ptr));
 116                                                 ptr.package     = pkg->e.name;
 117                                                 ptr.section     = sct->e.name;
 118                                                 ptr.option      = key;
 119                                                 err_flg = uci_lookup_ptr(ctx, &ptr, NULL, false);
 120                                                 if (err_flg == UCI_OK) {
 121                                                         ptr.value       = value;
 122                                                         err_flg         = uci_set(ctx, &ptr);
 123                                                         if (err_flg == UCI_OK) {
 124                                                                 err_flg = uci_save(ctx, pkg);
 125                                                                 if (err_flg == UCI_OK) {
 126                                                                         ret_val = true;
 127                                                                         log_debug("Set value to section %s in configuration file: %s\n", section_name, fname);
 128                                                                 }
 129                                                                 else {
 130                                                                         log_error("Failed to set value to configuration file: %s\n. Could not save the file\n", fname);
 131                                                                 }
 132
 133                                                         }
 134                                                         else {
 135                                                                 log_error("Failed to set value to configuration file: %s\n. Could not set new value\n", fname);
 136                                                         }
 137                                                 }
 138                                                 else {
 139                                                         log_error("Failed to set value to configuration file: %s\n. Could not look-up pointer for package %s section %s.\n", fname, pkg->e.name, sct->e.name);
 140                                                 }
 141                                                 uci_free_context(ctx);
 142                                         }
 143                                         else {
 144                                                 log_error("Failed to set value to configuration file: %s. Could not create section %s.\n", fname, section_name);
 145                                         }
 146                                 }
 147                                 else {
 148                                         log_error("Failed to set value to configuration file: %s. File does not exist or is not writable\n.", fname);
 149                                 }
 150                         }
 151                         free(fname);
 152                 }
 153                 else {
 154                         log_error("Failed to set value to configuration file: %s, out of memory\n", fname);
 155                 }
 156         }
 157         else {
 158                 log_error("Failed to set value to configuration file, invalid parameters\n");
 159         }
 160         return ret_val;
 161 }