diff options
Diffstat (limited to 'lib/libalpm/util.c')
| -rw-r--r-- | lib/libalpm/util.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/lib/libalpm/util.c b/lib/libalpm/util.c index 7ef4bf34..1c535d94 100644 --- a/lib/libalpm/util.c +++ b/lib/libalpm/util.c @@ -40,6 +40,7 @@ #ifdef HAVE_LIBSSL #include <openssl/md5.h> #include <openssl/sha.h> +#include <openssl/pem.h> #endif /* libalpm */ @@ -936,6 +937,29 @@ static int sha256_file(const char *path, unsigned char output[32]) SHA256_Final(output, &ctx); return 0; } + +static int base64_decode(const char* in, unsigned char *out, size_t *out_len) +{ + BIO *buff, *b64f; + size_t in_len = strlen(in); + + /* reasonable allocation of expected length is 3/4 of encoded length */ + MALLOC(out, in_len * 3 / 4 + 1, return -1); + + b64f = BIO_new(BIO_f_base64()); + buff = BIO_new_mem_buf((void *)in, in_len); + buff = BIO_push(b64f, buff); + + BIO_set_flags(buff, BIO_FLAGS_BASE64_NO_NL); + BIO_set_close(buff, BIO_CLOSE); + *out_len = BIO_read(buff, out, in_len); + out = realloc(out, ((*out_len) + 1) * sizeof(char)); + out[(*out_len)] = '\0'; + + BIO_free_all(buff); + + return 0; +} #endif /** Create a string representing bytes in hexadecimal. @@ -1031,6 +1055,17 @@ int _alpm_test_checksum(const char *filepath, const char *expected, return ret; } +int _alpm_base64_decode(const char *base64_data, unsigned char *out, size_t *out_len) +{ + if(base64_decode(base64_data, out, out_len)) { + out = NULL; + *out_len = 0; + return -1; + } + + return 0; +} + /* Note: does NOT handle sparse files on purpose for speed. */ /** TODO. * Does not handle sparse files on purpose for speed. |