| 33 | } DataContext; |
| 34 | |
| 35 | static av_cold int data_open(URLContext *h, const char *uri, int flags) |
| 36 | { |
| 37 | DataContext *dc = h->priv_data; |
| 38 | const char *data, *opt, *next; |
| 39 | char *ddata; |
| 40 | int ret, base64 = 0; |
| 41 | size_t in_size; |
| 42 | |
| 43 | /* data:content/type[;base64],payload */ |
| 44 | |
| 45 | av_strstart(uri, "data:", &uri); |
| 46 | data = strchr(uri, ','); |
| 47 | if (!data) { |
| 48 | av_log(h, AV_LOG_ERROR, "No ',' delimiter in URI\n"); |
| 49 | return AVERROR(EINVAL); |
| 50 | } |
| 51 | opt = uri; |
| 52 | while (opt < data) { |
| 53 | next = av_x_if_null(memchr(opt, ';', data - opt), data); |
| 54 | if (opt == uri) { |
| 55 | if (!memchr(opt, '/', next - opt)) { /* basic validity check */ |
| 56 | av_log(h, AV_LOG_ERROR, "Invalid content-type '%.*s'\n", |
| 57 | (int)(next - opt), opt); |
| 58 | return AVERROR(EINVAL); |
| 59 | } |
| 60 | av_log(h, AV_LOG_VERBOSE, "Content-type: %.*s\n", |
| 61 | (int)(next - opt), opt); |
| 62 | } else { |
| 63 | if (!av_strncasecmp(opt, "base64", next - opt)) { |
| 64 | base64 = 1; |
| 65 | } else { |
| 66 | av_log(h, AV_LOG_VERBOSE, "Ignoring option '%.*s'\n", |
| 67 | (int)(next - opt), opt); |
| 68 | } |
| 69 | } |
| 70 | opt = next + 1; |
| 71 | } |
| 72 | |
| 73 | data++; |
| 74 | in_size = strlen(data); |
| 75 | if (base64) { |
| 76 | size_t out_size = 3 * (in_size / 4) + 1; |
| 77 | |
| 78 | if (out_size > INT_MAX || !(ddata = av_malloc(out_size))) |
| 79 | return AVERROR(ENOMEM); |
| 80 | if ((ret = av_base64_decode(ddata, data, out_size)) < 0) { |
| 81 | av_free(ddata); |
| 82 | av_log(h, AV_LOG_ERROR, "Invalid base64 in URI\n"); |
| 83 | return ret; |
| 84 | } |
| 85 | dc->data = dc->tofree = ddata; |
| 86 | dc->size = ret; |
| 87 | } else { |
| 88 | dc->data = data; |
| 89 | dc->size = in_size; |
| 90 | } |
| 91 | return 0; |
| 92 | } |
nothing calls this directly
no test coverage detected