diff options
Diffstat (limited to 'source/pdf/pdf-xref.c')
| -rw-r--r-- | source/pdf/pdf-xref.c | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/source/pdf/pdf-xref.c b/source/pdf/pdf-xref.c index f6f4c292..0365e7a7 100644 --- a/source/pdf/pdf-xref.c +++ b/source/pdf/pdf-xref.c @@ -556,7 +556,7 @@ static void pdf_read_start_xref(fz_context *ctx, pdf_document *doc) { unsigned char buf[1024]; - int i, n; + size_t i, n; fz_off_t t; fz_seek(ctx, doc->file, 0, SEEK_END); @@ -567,8 +567,11 @@ pdf_read_start_xref(fz_context *ctx, pdf_document *doc) fz_seek(ctx, doc->file, t, SEEK_SET); n = fz_read(ctx, doc->file, buf, sizeof buf); + if (n < 9) + fz_throw(ctx, FZ_ERROR_GENERIC, "cannot find startxref"); - for (i = n - 9; i >= 0; i--) + i = n - 9; + do { if (memcmp(buf + i, "startxref", 9) == 0) { @@ -586,7 +589,7 @@ pdf_read_start_xref(fz_context *ctx, pdf_document *doc) return; break; } - } + } while (i-- > 0); fz_throw(ctx, FZ_ERROR_GENERIC, "cannot find startxref"); } @@ -766,7 +769,7 @@ pdf_read_old_xref(fz_context *ctx, pdf_document *doc, pdf_lexbuf *buf) fz_off_t ofs; int len; char *s; - int n; + size_t n; pdf_token tok; fz_off_t i; int c; @@ -2225,7 +2228,7 @@ pdf_update_stream(fz_context *ctx, pdf_document *doc, pdf_obj *obj, fz_buffer *n fz_drop_buffer(ctx, x->stm_buf); x->stm_buf = fz_keep_buffer(ctx, newbuf); - pdf_dict_puts_drop(ctx, obj, "Length", pdf_new_int(ctx, doc, newbuf->len)); + pdf_dict_puts_drop(ctx, obj, "Length", pdf_new_int(ctx, doc, (int)newbuf->len)); if (!compressed) { pdf_dict_dels(ctx, obj, "Filter"); @@ -2237,18 +2240,18 @@ int pdf_lookup_metadata(fz_context *ctx, pdf_document *doc, const char *key, char *buf, int size) { if (!strcmp(key, "format")) - return fz_snprintf(buf, size, "PDF %d.%d", doc->version/10, doc->version % 10); + return (int)fz_snprintf(buf, size, "PDF %d.%d", doc->version/10, doc->version % 10); if (!strcmp(key, "encryption")) { if (doc->crypt) - return fz_snprintf(buf, size, "Standard V%d R%d %d-bit %s", + return (int)fz_snprintf(buf, size, "Standard V%d R%d %d-bit %s", pdf_crypt_version(ctx, doc), pdf_crypt_revision(ctx, doc), pdf_crypt_length(ctx, doc), pdf_crypt_method(ctx, doc)); else - return fz_strlcpy(buf, "None", size); + return (int)fz_strlcpy(buf, "None", size); } if (strstr(key, "info:") == key) @@ -2266,7 +2269,7 @@ pdf_lookup_metadata(fz_context *ctx, pdf_document *doc, const char *key, char *b return -1; s = pdf_to_utf8(ctx, doc, info); - n = fz_strlcpy(buf, s, size); + n = (int)fz_strlcpy(buf, s, size); fz_free(ctx, s); return n; } |