1 | //FIXME Not checked on threadsafety yet; after checking please remove this line
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2 | #include "globals.h"
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3 | #ifdef WEBIF
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4 | #include "oscam-http.h"
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5 |
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6 | /* Adds a name->value-mapping or appends to it. You will get a reference back which you may freely
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7 | use (but you should not call free/realloc on this!)*/
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8 | char *tpl_addVar(struct templatevars *vars, int append, char *name, char *value){
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9 | int i;
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10 | char *tmp,*result = NULL;
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11 | for(i = (*vars).varscnt-1; i >= 0; --i){
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12 | if(strcmp((*vars).names[i], name) == 0){
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13 | result = (*vars).values[i];
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14 | break;
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15 | }
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16 | }
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17 | if(result == NULL){
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18 | if((*vars).varsalloc <= (*vars).varscnt){
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19 | (*vars).varsalloc = (*vars).varscnt * 2;
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20 | (*vars).names = (char**) realloc ((*vars).names, (*vars).varsalloc * sizeof(char**));
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21 | (*vars).values = (char**) realloc ((*vars).values, (*vars).varsalloc * sizeof(char**));
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22 | }
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23 | tmp = (char *) malloc((strlen(name) + 1) * sizeof(char));
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24 | strcpy(tmp, name);
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25 | (*vars).names[(*vars).varscnt] = tmp;
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26 | tmp = (char *) malloc((strlen(value) + 1) * sizeof(char));
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27 | strcpy(tmp, value);
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28 | (*vars).values[(*vars).varscnt] = tmp;
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29 | (*vars).varscnt = (*vars).varscnt + 1;
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30 | } else {
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31 | int newlen = strlen(value);
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32 | if(append == 1){
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33 | int oldlen = strlen((*vars).values[i]);
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34 | tmp = (char*) malloc ((oldlen + newlen + 1) * sizeof(char));
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35 | memcpy(tmp, (*vars).values[i], oldlen);
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36 | strcpy(tmp + oldlen, value);
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37 | } else {
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38 | tmp = (char*) malloc ((newlen + 1) * sizeof(char));
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39 | strcpy(tmp, value);
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40 | }
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41 | free((*vars).values[i]);
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42 | (*vars).values[i] = tmp;
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43 | }
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44 | return tmp;
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45 | }
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46 |
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47 | /* Allows to add a char array which has been allocated by malloc. It will automatically get
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48 | freed when calling tpl_clear(). Please do NOT free the memory yourself or realloc
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49 | it after having added the array here! */
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50 | char *tpl_addTmp(struct templatevars *vars, char *value){
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51 | if((*vars).tmpalloc <= (*vars).tmpcnt){
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52 | (*vars).tmpalloc = (*vars).tmpcnt * 2;
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53 | (*vars).tmp = (char**) realloc ((*vars).tmp, (*vars).tmpalloc * sizeof(char**));
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54 | }
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55 | (*vars).tmp[(*vars).tmpcnt] = value;
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56 | (*vars).tmpcnt = (*vars).tmpcnt + 1;
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57 | return value;
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58 | }
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59 |
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60 | /* Allows to do a dynamic printf without knowing and defining the needed memory size. If you specify
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61 | varname, the printf-result will be added/appended to the varlist. You will always get a reference
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62 | back which you may freely use (but you should not call free/realloc on this!)*/
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63 | char *tpl_printf(struct templatevars *vars, int append, char *varname, char *fmtstring, ...){
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64 | unsigned int allocated = strlen(fmtstring) - (strlen(fmtstring)%16) + 16;
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65 | char *result, *tmp = (char *) malloc(allocated * sizeof(char));
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66 | va_list argptr;
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67 |
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68 | va_start(argptr,fmtstring);
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69 | vsnprintf(tmp ,allocated, fmtstring, argptr);
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70 | va_end(argptr);
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71 | while (strlen(tmp) + 1 == allocated){
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72 | allocated += 16;
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73 | tmp = (char *) realloc(tmp, allocated * sizeof(char));
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74 | va_start(argptr,fmtstring);
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75 | vsnprintf(tmp, allocated, fmtstring, argptr);
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76 | va_end(argptr);
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77 | }
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78 | result = (char *) malloc(strlen(tmp) + 1 * sizeof(char));
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79 | strcpy(result, tmp);
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80 | free(tmp);
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81 | if(varname == NULL) tpl_addTmp(vars, result);
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82 | else {
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83 | char *tmp = tpl_addVar(vars, append, varname, result);
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84 | free(result);
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85 | result = tmp;
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86 | }
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87 | return result;
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88 | }
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89 |
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90 | /* Returns the value for a name or an empty string if nothing was found. */
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91 | char *tpl_getVar(struct templatevars *vars, char *name){
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92 | int i;
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93 | char *result = NULL;
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94 | for(i = (*vars).varscnt-1; i >= 0; --i){
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95 | if(strcmp((*vars).names[i], name) == 0){
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96 | result = (*vars).values[i];
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97 | break;
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98 | }
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99 | }
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100 | if(result == NULL) return "";
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101 | else return result;
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102 | }
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103 |
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104 | /* Initializes all variables vor a templatevar-structure and returns a pointer to it. Make
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105 | sure to call tpl_clear() when you are finished or you'll run into a memory leak! */
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106 | struct templatevars *tpl_create(){
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107 | struct templatevars *vars = (struct templatevars *) malloc(sizeof(struct templatevars));
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108 | (*vars).varsalloc = 16;
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109 | (*vars).varscnt = 0;
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110 | (*vars).tmpalloc = 16;
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111 | (*vars).tmpcnt = 0;
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112 | (*vars).names = (char**) malloc ((*vars).varsalloc * sizeof(char**));
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113 | (*vars).values = (char**) malloc ((*vars).varsalloc * sizeof(char**));
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114 | (*vars).tmp = (char**) malloc ((*vars).tmpalloc * sizeof(char**));
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115 | return vars;
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116 | }
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117 |
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118 | /* Clears all allocated memory for the specified templatevar-structure. */
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119 | void tpl_clear(struct templatevars *vars){
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120 | int i;
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121 | for(i = (*vars).varscnt-1; i >= 0; --i){
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122 | free((*vars).names[i]);
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123 | free((*vars).values[i]);
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124 | }
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125 | free((*vars).names);
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126 | free((*vars).values);
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127 | for(i = (*vars).tmpcnt-1; i >= 0; --i){
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128 | free((*vars).tmp[i]);
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129 | }
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130 | free((*vars).tmp);
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131 | free(vars);
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132 | }
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133 |
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134 | /* Creates a path to a template file. You need to set the resultsize to the correct size of result. */
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135 | char *tpl_getTplPath(const char *name, const char *path, char *result, unsigned int resultsize){
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136 | char *pch;
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137 | if((strlen(path) + strlen(name) + 6) <= resultsize){
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138 | strcpy(result, path);
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139 | strcat(result, name);
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140 | strcat(result, ".tpl");
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141 | result[resultsize - 1] = '\0';
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142 | for(pch = result + strlen(path); pch[0] != '\0'; ++pch){
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143 | if(pch[0] == '/' || pch[0] == '\\') pch[0] = ' ';
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144 | }
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145 | } else result[0] = '\0';
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146 | return result;
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147 | }
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148 |
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149 | /* Returns an unparsed template either from disk or from internal templates.
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150 | Note: You must free() the result after using it!*/
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151 | char *tpl_getUnparsedTpl(const char* name){
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152 | int i;
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153 | int tplcnt = sizeof(tpl)/sizeof(char *);
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154 | int tplmapcnt = sizeof(tplmap)/sizeof(char *);
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155 | char *result;
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156 |
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157 | for(i = 0; i < tplcnt; ++i){
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158 | if(strcmp(name, tpl[i]) == 0) break;
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159 | }
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160 |
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161 | if(strlen(cfg->http_tpl) > 0){
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162 | char path[200];
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163 | if(strlen(tpl_getTplPath(name, cfg->http_tpl, path, 200)) > 0 && file_exists(path)){
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164 | FILE *fp;
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165 | char buffer[1024];
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166 | int read, allocated = 1025, size = 0;
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167 | result = (char *) malloc(allocated * sizeof(char));
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168 | if((fp = fopen(path,"r"))!=NULL){
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169 | while((read = fread(&buffer,sizeof(char),1024,fp)) > 0){
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170 | if(allocated < size + read + 1) {
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171 | allocated += size + 1024;
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172 | result = (char *) realloc(result, allocated * sizeof(char));
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173 | }
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174 | memcpy(result + size, buffer, read);
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175 | size += read;
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176 | }
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177 | result[size] = '\0';
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178 | fclose (fp);
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179 | return result;
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180 | }
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181 | }
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182 | }
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183 | if(i >= 0 && i < tplmapcnt){
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184 | int len = (strlen(tplmap[i])) + 1;
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185 | result = (char *) malloc(len * sizeof(char));
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186 | memcpy(result, tplmap[i], len);
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187 | } else {
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188 | result = (char *) malloc(1 * sizeof(char));
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189 | result[0] = '\0';
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190 | }
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191 | return result;
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192 | }
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193 |
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194 | /* Returns the specified template with all variables/other templates replaced or an
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195 | empty string if the template doesn't exist*/
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196 | char *tpl_getTpl(struct templatevars *vars, const char* name){
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197 | char *tplorg = tpl_getUnparsedTpl(name);
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198 | char *tplend = tplorg + strlen(tplorg);
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199 | char *pch, *pch2, *tpl=tplorg;
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200 | char varname[33];
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201 |
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202 | int tmp,respos = 0;
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203 | int allocated = 2 * strlen(tpl) + 1;
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204 | char *result = (char *) malloc(allocated * sizeof(char));
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205 |
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206 | while(tpl < tplend){
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207 | if(tpl[0] == '#' && tpl[1] == '#' && tpl[2] != '#'){
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208 | pch2 = tpl;
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209 | pch = tpl + 2;
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210 | while(pch[0] != '\0' && (pch[0] != '#' || pch[1] != '#')) ++pch;
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211 | if(pch - pch2 < 32 && pch[0] == '#' && pch[1] == '#'){
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212 | memcpy(varname, pch2 + 2, pch - pch2 - 2);
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213 | varname[pch - pch2 - 2] = '\0';
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214 | if(strncmp(varname, "TPL", 3) == 0){
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215 | pch2 = tpl_getTpl(vars, varname + 3);
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216 | } else {
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217 | pch2 = tpl_getVar(vars, varname);
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218 | }
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219 | tmp = strlen(pch2);
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220 | if(tmp + respos + 2 >= allocated){
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221 | allocated = tmp + respos + 256;
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222 | result = (char *) realloc(result, allocated * sizeof(char));
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223 | }
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224 | memcpy(result + respos, pch2, tmp);
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225 | respos += tmp;
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226 | tpl = pch + 2;
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227 | }
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228 | } else {
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229 | if(respos + 2 >= allocated){
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230 | allocated = respos + 256;
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231 | result = (char *) realloc(result, allocated * sizeof(char));
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232 | }
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233 | result[respos] = tpl[0];
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234 | ++respos;
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235 | ++tpl;
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236 | }
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237 | }
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238 | free(tplorg);
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239 | result[respos] = '\0';
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240 | tpl_addTmp(vars, result);
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241 | return result;
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242 | }
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243 |
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244 | /* Saves all templates to the specified paths. Existing files will be overwritten! */
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245 | int tpl_saveIncludedTpls(const char *path){
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246 | int tplcnt = sizeof(tpl)/sizeof(char *);
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247 | int tplmapcnt = sizeof(tplmap)/sizeof(char *);
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248 | int i, cnt = 0;
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249 | char tmp[200];
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250 | FILE *fp;
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251 | for(i = 0; i < tplcnt && i < tplmapcnt; ++i){
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252 | if(strlen(tpl_getTplPath(tpl[i], path, tmp, 200)) > 0 && (fp = fopen(tmp,"w")) != NULL){
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253 | fwrite(tplmap[i], sizeof(char), strlen(tplmap[i]), fp);
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254 | fclose (fp);
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255 | ++cnt;
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256 | }
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257 | }
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258 | return cnt;
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259 | }
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260 |
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261 | /* Parses a value in an authentication string by removing all quotes/whitespace. Note that the original array is modified*/
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262 | char *parse_auth_value(char *value){
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263 | char *pch = value;
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264 | char *pch2;
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265 | value = strstr(value, "=");
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266 | if(value != NULL){
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267 | do{
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268 | ++value;
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269 | } while (value[0] == ' ' || value[0] == '"');
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270 | pch = value;
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271 | for(pch2 = value + strlen(value) - 1; pch2 >= value && (pch2[0] == ' ' || pch2[0] == '"' || pch2[0] == '\r' || pch2[0] == '\n'); --pch2) pch2[0] = '\0';
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272 | }
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273 | return pch;
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274 | }
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275 |
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276 | /* Calculates the currently valid nonce value and copies it to result*/
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277 | void calculate_nonce(char *result, int resultlen){
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278 | char *expectednonce, *noncetmp;
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279 | noncetmp = (char*) malloc (128*sizeof(char));
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280 | sprintf(noncetmp, "%d", (int)time(NULL)/AUTHNONCEVALIDSECS);
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281 | strcat(noncetmp, ":");
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282 | strcat(noncetmp, noncekey);
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283 | fflush(stdout);
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284 | expectednonce =char_to_hex(MD5((unsigned char*)noncetmp, strlen(noncetmp), NULL), MD5_DIGEST_LENGTH, hex2ascii);
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285 | cs_strncpy(result, expectednonce, resultlen);
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286 | free(noncetmp);
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287 | free(expectednonce);
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288 | }
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289 |
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290 | /* Checks if authentication is correct. Returns -1 if not correct, 1 if correct and 2 if nonce isn't valid anymore */
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291 | int check_auth(char *authstring, char *method, char *path, char *expectednonce){
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292 | int authok = 0, uriok = 0;
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293 | char *authnonce;
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294 | char *authnc;
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295 | char *authcnonce;
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296 | char *uri;
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297 | char *authresponse;
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298 | char *A1tmp, *A2tmp, *A3tmp;
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299 | char *A1, *A2, *A3;
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300 | char *pch, *pch2;
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301 |
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302 | authnonce = "";
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303 | authnc = "";
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304 | authcnonce = "";
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305 | authresponse = "";
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306 | uri = "";
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307 | pch = authstring + 22;
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308 | pch = strtok (pch,",");
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309 | while (pch != NULL){
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310 | pch2 = pch;
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311 | while(pch2[0] == ' ' && pch2[0] != '\0') ++pch2;
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312 | if(strncmp(pch2, "nonce", 5) == 0){
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313 | authnonce=parse_auth_value(pch2);
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314 | } else if (strncmp(pch2, "nc", 2) == 0){
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315 | authnc=parse_auth_value(pch2);
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316 | } else if (strncmp(pch2, "cnonce", 6) == 0){
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317 | authcnonce=parse_auth_value(pch2);
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318 | } else if (strncmp(pch2, "response", 8) == 0){
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319 | authresponse=parse_auth_value(pch2);
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320 | } else if (strncmp(pch2, "uri", 3) == 0){
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321 | uri=parse_auth_value(pch2);
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322 | }
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323 | pch = strtok (NULL, ",");
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324 | }
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325 | if(strncmp(uri, path, strlen(path)) == 0) uriok = 1;
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326 | else {
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327 | pch2 = uri;
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328 | for(pch = uri; pch[0] != '\0'; ++pch) {
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329 | if(pch[0] == '/') pch2 = pch;
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330 | }
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331 | if(strncmp(pch2, path, strlen(path)) == 0) uriok = 1;
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332 | }
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333 | if(uriok == 1){
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334 | A1tmp = (char*) malloc ((3 + strlen(cfg->http_user) + strlen(AUTHREALM) + strlen(cfg->http_pwd))*sizeof(char));
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335 | strcpy(A1tmp, cfg->http_user);
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336 | strcat(A1tmp, ":");
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337 | strcat(A1tmp, AUTHREALM);
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338 | strcat(A1tmp, ":");
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339 | strcat(A1tmp, cfg->http_pwd);
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340 | A2tmp = (char*) malloc ((2 + strlen(method) + strlen(uri))*sizeof(char));
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341 | strcpy(A2tmp, method);
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342 | strcat(A2tmp, ":");
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343 | strcat(A2tmp, uri);
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344 | A1=char_to_hex(MD5((unsigned char*)A1tmp, strlen(A1tmp), NULL), MD5_DIGEST_LENGTH, hex2ascii);
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345 | A2=char_to_hex(MD5((unsigned char*)A2tmp, strlen(A2tmp), NULL), MD5_DIGEST_LENGTH, hex2ascii);
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346 | A3tmp = (char*) malloc ((10 + strlen(A1) + strlen(A2) + strlen(authnonce) + strlen(authnc) + strlen(authcnonce))*sizeof(char));
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347 | strcpy(A3tmp, A1);
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348 | strcat(A3tmp, ":");
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349 | strcat(A3tmp, authnonce);
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350 | strcat(A3tmp, ":");
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351 | strcat(A3tmp, authnc);
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352 | strcat(A3tmp, ":");
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353 | strcat(A3tmp, authcnonce);
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354 | strcat(A3tmp, ":auth:");
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355 | strcat(A3tmp, A2);
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356 | A3=char_to_hex(MD5((unsigned char*)A3tmp, strlen(A3tmp), NULL), MD5_DIGEST_LENGTH, hex2ascii);
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357 | if(strcmp(A3, authresponse) == 0) {
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358 | if(strcmp(expectednonce, authnonce) == 0) authok = 1;
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359 | else authok = 2;
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360 | }
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361 | free(A1tmp);
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362 | free(A2tmp);
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363 | free(A3tmp);
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364 | free(A1);
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365 | free(A2);
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366 | free(A3);
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367 | }
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368 | return authok;
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369 | }
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370 |
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371 | void send_headers(FILE *f, int status, char *title, char *extra, char *mime){
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372 |
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373 | time_t now;
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374 | char timebuf[128];
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375 |
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376 | fprintf(f, "%s %d %s\r\n", PROTOCOL, status, title);
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377 | fprintf(f, "Server: %s\r\n", SERVER);
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378 |
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379 | now = time(NULL);
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380 | strftime(timebuf, sizeof(timebuf), RFC1123FMT, gmtime(&now));
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381 | fprintf(f, "Date: %s\r\n", timebuf);
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382 |
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383 | if (extra)
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384 | fprintf(f, "%s\r\n", extra);
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385 |
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386 | if (mime)
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387 | fprintf(f, "Content-Type: %s\r\n", mime);
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388 |
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389 | strftime(timebuf, sizeof(timebuf), RFC1123FMT, gmtime(&now));
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390 | fprintf(f, "Cache-Control: no-store, no-cache, must-revalidate\r\n");
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391 | fprintf(f, "Expires: Sat, 26 Jul 1997 05:00:00 GMT\r\n");
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392 | fprintf(f, "Last-Modified: %s\r\n", timebuf);
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393 | fprintf(f, "Connection: close\r\n");
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394 | fprintf(f, "\r\n");
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395 | }
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396 |
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397 | void send_css(FILE *f){
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398 | if(strlen(cfg->http_css) > 0 && file_exists(cfg->http_css) == 1){
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399 | FILE *fp;
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400 | char buffer[1024];
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401 | int read;
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402 |
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403 | if((fp = fopen(cfg->http_css,"r"))==NULL) return;
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404 | while((read = fread(&buffer,sizeof(char),1024,fp)) > 0) fwrite(&buffer, sizeof(char), read, f);
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405 | fclose (fp);
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406 | } else {
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407 | fputs(CSS, f);
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408 | }
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409 | }
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410 |
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411 | void send_js(FILE *f){
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412 | if(strlen(cfg->http_jscript) > 0 && file_exists(cfg->http_jscript) == 1){
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413 | FILE *fp;
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414 | char buffer[1024];
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415 | int read;
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416 |
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417 | if((fp = fopen(cfg->http_jscript,"r"))==NULL) return;
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418 | while((read = fread(&buffer,sizeof(char),1024,fp)) > 0) fwrite(&buffer, sizeof(char), read, f);
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419 | fclose (fp);
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420 | } else {
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421 | fputs(JSCRIPT, f);
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422 | }
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423 | }
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424 |
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425 | void send_error(FILE *f, int status, char *title, char *extra, char *text){
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426 | send_headers(f, status, title, extra, "text/html");
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427 | fprintf(f, "<HTML><HEAD><TITLE>%d %s</TITLE></HEAD>\r\n", status, title);
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428 | fprintf(f, "<BODY><H4>%d %s</H4>\r\n", status, title);
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429 | fprintf(f, "%s\r\n", text);
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430 | fprintf(f, "</BODY></HTML>\r\n");
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431 | }
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432 |
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433 | char *getParam(struct uriparams *params, char *name){
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434 | int i;
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435 | for(i=(*params).paramcount-1; i>=0; --i){
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436 | if(strcmp((*params).params[i], name) == 0) return (*params).values[i];
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437 | }
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438 | return "";
|
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439 | }
|
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440 |
|
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441 | char *getParamDef(struct uriparams *params, char *name, char* def){
|
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442 | int i;
|
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443 | for(i=(*params).paramcount-1; i>=0; --i){
|
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444 | if(strcmp((*params).params[i], name) == 0) return (*params).values[i];
|
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445 | }
|
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446 | return def;
|
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447 | }
|
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448 | #endif
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