Mercurial > trustbridge
comparison common/strhelp.c @ 160:bf4bfd8843bd
Add memory allocating base64 decode function
| author | Andre Heinecke <aheinecke@intevation.de> |
|---|---|
| date | Tue, 25 Mar 2014 10:07:12 +0000 |
| parents | b026e6d2a161 |
| children | 4def8b263dd3 |
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| 159:37c9653b8755 | 160:bf4bfd8843bd |
|---|---|
| 2 #include <stdbool.h> | 2 #include <stdbool.h> |
| 3 #include <stdio.h> | 3 #include <stdio.h> |
| 4 #include <stdlib.h> | 4 #include <stdlib.h> |
| 5 #include <string.h> | 5 #include <string.h> |
| 6 #include <assert.h> | 6 #include <assert.h> |
| 7 | |
| 8 #include <polarssl/base64.h> | |
| 7 | 9 |
| 8 /* Remarks regarding the "Flawfinder: ignore" comments in this file: | 10 /* Remarks regarding the "Flawfinder: ignore" comments in this file: |
| 9 * | 11 * |
| 10 * - strlen: | 12 * - strlen: |
| 11 * | 13 * |
| 148 i = strlen(*s); /* Flawfinder: ignore */ | 150 i = strlen(*s); /* Flawfinder: ignore */ |
| 149 while (isspace((*s)[--i])) | 151 while (isspace((*s)[--i])) |
| 150 (*s)[i] = '\0'; | 152 (*s)[i] = '\0'; |
| 151 } | 153 } |
| 152 } | 154 } |
| 155 | |
| 156 int str_base64_decode(char **dst, size_t *dst_size, char *src, | |
| 157 size_t src_size) | |
| 158 { | |
| 159 int ret = -1; | |
| 160 | |
| 161 if (!dst || *dst) { | |
| 162 return -1; | |
| 163 } | |
| 164 | |
| 165 /* Check the needed size for the buffer */ | |
| 166 ret = base64_decode(NULL, dst_size, | |
| 167 (unsigned char *)src, src_size); | |
| 168 | |
| 169 if (ret != 0 && ret != POLARSSL_ERR_BASE64_BUFFER_TOO_SMALL) { | |
| 170 return ret; | |
| 171 } | |
| 172 | |
| 173 *dst = xmalloc(*dst_size); | |
| 174 memset (*dst, 0, *dst_size); | |
| 175 | |
| 176 ret = base64_decode((unsigned char *)*dst, dst_size, | |
| 177 (unsigned char *)src, src_size); | |
| 178 if (!ret) { | |
| 179 free (*dst); | |
| 180 *dst = NULL; | |
| 181 dst_size = 0; | |
| 182 } | |
| 183 return ret; | |
| 184 } |