diff options
Diffstat (limited to 'lib/libalpm/util.c')
| -rw-r--r-- | lib/libalpm/util.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/lib/libalpm/util.c b/lib/libalpm/util.c index ddc3edcc..5f431171 100644 --- a/lib/libalpm/util.c +++ b/lib/libalpm/util.c @@ -48,6 +48,7 @@ #include "error.h" #include "package.h" #include "alpm.h" +#include "md5.h" #ifndef HAVE_STRVERSCMP /* GNU's strverscmp() function, taken from glibc 2.3.2 sources @@ -541,5 +542,46 @@ int _alpm_str_cmp(const void *s1, const void *s2) return(strcmp(s1, s2)); } +/** Get the md5 sum of file. + * @param filename name of the file + * @return the checksum on success, NULL on error + * @addtogroup alpm_misc + */ +char SYMEXPORT *alpm_get_md5sum(char *filename) +{ + unsigned char output[16]; + char *md5sum; + int ret, i; + + ALPM_LOG_FUNC; + + ASSERT(filename != NULL, return(NULL)); + + /* allocate 32 chars plus 1 for null */ + md5sum = calloc(33, sizeof(char)); + ret = md5_file(filename, output); + + if (ret > 0) { + if (ret == 1) { + _alpm_log(PM_LOG_ERROR, _("md5: %s can't be opened\n"), filename); + } else if (ret == 2) { + _alpm_log(PM_LOG_ERROR, _("md5: %s can't be read\n"), filename); + } + + return(NULL); + } + + /* Convert the result to something readable */ + for (i = 0; i < 16; i++) { + /* sprintf is acceptable here because we know our output */ + sprintf(md5sum +(i * 2), "%02x", output[i]); + } + md5sum[32] = '\0'; + + _alpm_log(PM_LOG_DEBUG, "md5(%s) = %s", filename, md5sum); + return(md5sum); +} + + /* vim: set ts=2 sw=2 noet: */ |