/* * digest.c, SJ */ #include #include #include #include #include #include #include #include #include #include int make_body_digest(struct session_data *sdata, struct __config *cfg){ int i=0, n, fd, hdr_len=0, offset=3; char *body=NULL; unsigned char buf[MAXBUFSIZE], md[DIGEST_LENGTH]; SHA256_CTX context; //if(cfg->verbosity >= _LOG_DEBUG) syslog(LOG_PRIORITY, "%s: digesting", sdata->ttmpfile); memset(sdata->bodydigest, 0, 2*DIGEST_LENGTH+1); SHA256_Init(&context); fd = open(sdata->ttmpfile, O_RDONLY); if(fd == -1) return -1; while((n = read(fd, buf, MAXBUFSIZE)) > 0){ body = (char *)&buf[0]; if(i == 0){ hdr_len = searchStringInBuffer(body, MAXBUFSIZE, "\n\r\n", 3); if(hdr_len == 0){ searchStringInBuffer(body, 2*MAXBUFSIZE+1, "\n\n", 2); offset = 2; } if(hdr_len > 0){ hdr_len += offset; sdata->hdr_len = hdr_len; body += hdr_len; n -= hdr_len; if(cfg->verbosity >= _LOG_DEBUG) syslog(LOG_PRIORITY, "%s: hdr_len: %d, offset: %d", sdata->ttmpfile, hdr_len, offset); } } SHA256_Update(&context, body, n); i++; } close(fd); SHA256_Final(md, &context); for(i=0;ibodydigest + i*2, 2*DIGEST_LENGTH, "%02x", md[i]); return 0; } void digest_file(char *filename, char *digest){ int fd, i, n; unsigned char buf[MAXBUFSIZE], md[DIGEST_LENGTH]; SHA256_CTX context; memset(digest, 0, 2*DIGEST_LENGTH+1); fd = open(filename, O_RDONLY); if(fd == -1) return; SHA256_Init(&context); while((n = read(fd, buf, MAXBUFSIZE)) > 0){ SHA256_Update(&context, buf, n); } close(fd); SHA256_Final(md, &context); for(i=0;i