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-rw-r--r--source/pdf/pdf-crypt.c58
1 files changed, 29 insertions, 29 deletions
diff --git a/source/pdf/pdf-crypt.c b/source/pdf/pdf-crypt.c
index 4519657f..88e485ff 100644
--- a/source/pdf/pdf-crypt.c
+++ b/source/pdf/pdf-crypt.c
@@ -38,7 +38,7 @@ struct pdf_crypt_s
unsigned char key[32]; /* decryption key generated from password */
};
-static void pdf_parse_crypt_filter(fz_context *ctx, pdf_crypt_filter *cf, pdf_crypt *crypt, char *name);
+static void pdf_parse_crypt_filter(fz_context *ctx, pdf_crypt_filter *cf, pdf_crypt *crypt, pdf_obj *name);
/*
* Create crypt object for decrypting strings and streams
@@ -55,20 +55,20 @@ pdf_new_crypt(fz_context *ctx, pdf_obj *dict, pdf_obj *id)
/* Common to all security handlers (PDF 1.7 table 3.18) */
- obj = pdf_dict_gets(ctx, dict, "Filter");
+ obj = pdf_dict_get(ctx, dict, PDF_NAME_Filter);
if (!pdf_is_name(ctx, obj))
{
pdf_drop_crypt(ctx, crypt);
fz_throw(ctx, FZ_ERROR_GENERIC, "unspecified encryption handler");
}
- if (strcmp(pdf_to_name(ctx, obj), "Standard") != 0)
+ if (!pdf_name_eq(ctx, PDF_NAME_Standard, obj) != 0)
{
pdf_drop_crypt(ctx, crypt);
fz_throw(ctx, FZ_ERROR_GENERIC, "unknown encryption handler: '%s'", pdf_to_name(ctx, obj));
}
crypt->v = 0;
- obj = pdf_dict_gets(ctx, dict, "V");
+ obj = pdf_dict_get(ctx, dict, PDF_NAME_V);
if (pdf_is_int(ctx, obj))
crypt->v = pdf_to_int(ctx, obj);
if (crypt->v != 1 && crypt->v != 2 && crypt->v != 4 && crypt->v != 5)
@@ -79,7 +79,7 @@ pdf_new_crypt(fz_context *ctx, pdf_obj *dict, pdf_obj *id)
/* Standard security handler (PDF 1.7 table 3.19) */
- obj = pdf_dict_gets(ctx, dict, "R");
+ obj = pdf_dict_get(ctx, dict, PDF_NAME_R);
if (pdf_is_int(ctx, obj))
crypt->r = pdf_to_int(ctx, obj);
else if (crypt->v <= 4)
@@ -104,7 +104,7 @@ pdf_new_crypt(fz_context *ctx, pdf_obj *dict, pdf_obj *id)
fz_throw(ctx, FZ_ERROR_GENERIC, "unknown crypt revision %d", r);
}
- obj = pdf_dict_gets(ctx, dict, "O");
+ obj = pdf_dict_get(ctx, dict, PDF_NAME_O);
if (pdf_is_string(ctx, obj) && pdf_to_str_len(ctx, obj) == 32)
memcpy(crypt->o, pdf_to_str_buf(ctx, obj), 32);
/* /O and /U are supposed to be 48 bytes long for revision 5 and 6, they're often longer, though */
@@ -116,7 +116,7 @@ pdf_new_crypt(fz_context *ctx, pdf_obj *dict, pdf_obj *id)
fz_throw(ctx, FZ_ERROR_GENERIC, "encryption dictionary missing owner password");
}
- obj = pdf_dict_gets(ctx, dict, "U");
+ obj = pdf_dict_get(ctx, dict, PDF_NAME_U);
if (pdf_is_string(ctx, obj) && pdf_to_str_len(ctx, obj) == 32)
memcpy(crypt->u, pdf_to_str_buf(ctx, obj), 32);
/* /O and /U are supposed to be 48 bytes long for revision 5 and 6, they're often longer, though */
@@ -133,7 +133,7 @@ pdf_new_crypt(fz_context *ctx, pdf_obj *dict, pdf_obj *id)
fz_throw(ctx, FZ_ERROR_GENERIC, "encryption dictionary missing user password");
}
- obj = pdf_dict_gets(ctx, dict, "P");
+ obj = pdf_dict_get(ctx, dict, PDF_NAME_P);
if (pdf_is_int(ctx, obj))
crypt->p = pdf_to_int(ctx, obj);
else
@@ -144,7 +144,7 @@ pdf_new_crypt(fz_context *ctx, pdf_obj *dict, pdf_obj *id)
if (crypt->r == 5 || crypt->r == 6)
{
- obj = pdf_dict_gets(ctx, dict, "OE");
+ obj = pdf_dict_get(ctx, dict, PDF_NAME_OE);
if (!pdf_is_string(ctx, obj) || pdf_to_str_len(ctx, obj) != 32)
{
pdf_drop_crypt(ctx, crypt);
@@ -152,7 +152,7 @@ pdf_new_crypt(fz_context *ctx, pdf_obj *dict, pdf_obj *id)
}
memcpy(crypt->oe, pdf_to_str_buf(ctx, obj), 32);
- obj = pdf_dict_gets(ctx, dict, "UE");
+ obj = pdf_dict_get(ctx, dict, PDF_NAME_UE);
if (!pdf_is_string(ctx, obj) || pdf_to_str_len(ctx, obj) != 32)
{
pdf_drop_crypt(ctx, crypt);
@@ -162,7 +162,7 @@ pdf_new_crypt(fz_context *ctx, pdf_obj *dict, pdf_obj *id)
}
crypt->encrypt_metadata = 1;
- obj = pdf_dict_gets(ctx, dict, "EncryptMetadata");
+ obj = pdf_dict_get(ctx, dict, PDF_NAME_EncryptMetadata);
if (pdf_is_bool(ctx, obj))
crypt->encrypt_metadata = pdf_to_bool(ctx, obj);
@@ -182,7 +182,7 @@ pdf_new_crypt(fz_context *ctx, pdf_obj *dict, pdf_obj *id)
crypt->length = 40;
if (crypt->v == 2 || crypt->v == 4)
{
- obj = pdf_dict_gets(ctx, dict, "Length");
+ obj = pdf_dict_get(ctx, dict, PDF_NAME_Length);
if (pdf_is_int(ctx, obj))
crypt->length = pdf_to_int(ctx, obj);
@@ -222,7 +222,7 @@ pdf_new_crypt(fz_context *ctx, pdf_obj *dict, pdf_obj *id)
crypt->strf.method = PDF_CRYPT_NONE;
crypt->strf.length = crypt->length;
- obj = pdf_dict_gets(ctx, dict, "CF");
+ obj = pdf_dict_get(ctx, dict, PDF_NAME_CF);
if (pdf_is_dict(ctx, obj))
{
crypt->cf = pdf_keep_obj(ctx, obj);
@@ -234,13 +234,13 @@ pdf_new_crypt(fz_context *ctx, pdf_obj *dict, pdf_obj *id)
fz_try(ctx)
{
- obj = pdf_dict_gets(ctx, dict, "StmF");
+ obj = pdf_dict_get(ctx, dict, PDF_NAME_StmF);
if (pdf_is_name(ctx, obj))
- pdf_parse_crypt_filter(ctx, &crypt->stmf, crypt, pdf_to_name(ctx, obj));
+ pdf_parse_crypt_filter(ctx, &crypt->stmf, crypt, obj);
- obj = pdf_dict_gets(ctx, dict, "StrF");
+ obj = pdf_dict_get(ctx, dict, PDF_NAME_StrF);
if (pdf_is_name(ctx, obj))
- pdf_parse_crypt_filter(ctx, &crypt->strf, crypt, pdf_to_name(ctx, obj));
+ pdf_parse_crypt_filter(ctx, &crypt->strf, crypt, obj);
}
fz_catch(ctx)
{
@@ -269,12 +269,12 @@ pdf_drop_crypt(fz_context *ctx, pdf_crypt *crypt)
*/
static void
-pdf_parse_crypt_filter(fz_context *ctx, pdf_crypt_filter *cf, pdf_crypt *crypt, char *name)
+pdf_parse_crypt_filter(fz_context *ctx, pdf_crypt_filter *cf, pdf_crypt *crypt, pdf_obj *name)
{
pdf_obj *obj;
pdf_obj *dict;
- int is_identity = (strcmp(name, "Identity") == 0);
- int is_stdcf = (!is_identity && (strcmp(name, "StdCF") == 0));
+ int is_identity = (pdf_name_eq(ctx, name, PDF_NAME_Identity));
+ int is_stdcf = (!is_identity && pdf_name_eq(ctx, name, PDF_NAME_StdCF));
if (!is_identity && !is_stdcf)
fz_throw(ctx, FZ_ERROR_GENERIC, "Crypt Filter not Identity or StdCF (%d %d R)", pdf_to_num(ctx, crypt->cf), pdf_to_gen(ctx, crypt->cf));
@@ -288,26 +288,26 @@ pdf_parse_crypt_filter(fz_context *ctx, pdf_crypt_filter *cf, pdf_crypt *crypt,
return;
}
- dict = pdf_dict_gets(ctx, crypt->cf, name);
+ dict = pdf_dict_get(ctx, crypt->cf, name);
if (!pdf_is_dict(ctx, dict))
fz_throw(ctx, FZ_ERROR_GENERIC, "cannot parse crypt filter (%d %d R)", pdf_to_num(ctx, crypt->cf), pdf_to_gen(ctx, crypt->cf));
- obj = pdf_dict_gets(ctx, dict, "CFM");
+ obj = pdf_dict_get(ctx, dict, PDF_NAME_CFM);
if (pdf_is_name(ctx, obj))
{
- if (!strcmp(pdf_to_name(ctx, obj), "None"))
+ if (pdf_name_eq(ctx, PDF_NAME_None, obj))
cf->method = PDF_CRYPT_NONE;
- else if (!strcmp(pdf_to_name(ctx, obj), "V2"))
+ else if (pdf_name_eq(ctx, PDF_NAME_V2, obj))
cf->method = PDF_CRYPT_RC4;
- else if (!strcmp(pdf_to_name(ctx, obj), "AESV2"))
+ else if (pdf_name_eq(ctx, PDF_NAME_AESV2, obj))
cf->method = PDF_CRYPT_AESV2;
- else if (!strcmp(pdf_to_name(ctx, obj), "AESV3"))
+ else if (pdf_name_eq(ctx, PDF_NAME_AESV3, obj))
cf->method = PDF_CRYPT_AESV3;
else
fz_warn(ctx, "unknown encryption method: %s", pdf_to_name(ctx, obj));
}
- obj = pdf_dict_gets(ctx, dict, "Length");
+ obj = pdf_dict_get(ctx, dict, PDF_NAME_Length);
if (pdf_is_int(ctx, obj))
cf->length = pdf_to_int(ctx, obj);
@@ -977,9 +977,9 @@ pdf_open_crypt(fz_context *ctx, fz_stream *chain, pdf_crypt *crypt, int num, int
}
fz_stream *
-pdf_open_crypt_with_filter(fz_context *ctx, fz_stream *chain, pdf_crypt *crypt, char *name, int num, int gen)
+pdf_open_crypt_with_filter(fz_context *ctx, fz_stream *chain, pdf_crypt *crypt, pdf_obj *name, int num, int gen)
{
- if (strcmp(name, "Identity"))
+ if (!pdf_name_eq(ctx, name, PDF_NAME_Identity))
{
pdf_crypt_filter cf;
pdf_parse_crypt_filter(ctx, &cf, crypt, name);
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-01 20:31:23 +0000