Check len macros during parsing.

[cascardo/libreceita.git] / decfile.c

diff --git a/decfile.c b/decfile.c
index 33062d3..100d4d3 100644 (file)
--- a/decfile.c
+++ b/decfile.c
@@ -176,6 +176,7 @@ static int parse_header_2014(struct pmhash *hash, char *buffer)
        char *p = buffer;
        char *key;
        char *val;
+       char *tail;
 
 #define parse(field, sz) \
        r = -ENOMEM; \
@@ -207,6 +208,12 @@ static int parse_header_2014(struct pmhash *hash, char *buffer)
        parse("nome", 60);
        parse("uf", 2);
        parse("hash", 10);
+
+       if (p - buffer != RNET_HEADER_HEAD_2014) {
+               fprintf(stderr, "RNET_HEADER_HEAD_2014 in decfile.h needs to be adjusted to %i\n", p - buffer);
+               goto out_val;
+       }
+
        parse("in_cert", 1);
        parse("dt_nasc", 8);
        parse("in_comp", 1);
@@ -279,9 +286,35 @@ static int parse_header_2014(struct pmhash *hash, char *buffer)
        parse("nr_conta", 13);
        parse("nr_dv_conta", 2);
        parse("in_dv_conta", 1);
+
+       tail = p;
+
        parse("versaotestpgd", 3);
        parse("controle", 10);
 
+       if (*p++ != '\r') {
+               fprintf(stderr,
+                       "missing CR at the %ith header character\n",
+                       p - buffer);
+               goto out_val;
+       } else if (*p++ != '\n') {
+               fprintf(stderr,
+                       "missing LF at the %ith header character\n",
+                       p - buffer);
+               goto out_val;
+       } else if (*p != 0) {
+               fprintf(stderr,
+                       "missing NUL at the %ith header character\n",
+                       p - buffer);
+               goto out_val;
+       } else if (p - buffer != RNET_HEADER_SIZE_2014) {
+               fprintf(stderr, "RNET_HEADER_SIZE_2014 in decfile.h needs to be adjusted to %i,\nor parse_header in decfile.c needs updating\n", p - buffer);
+               goto out_val;
+       } else if (p - tail != RNET_HEADER_TAIL_2014) {
+               fprintf(stderr, "RNET_HEADER_TAIL_2014 in decfile.h needs to be adjusted to %i\n", p - tail);
+               goto out_val;
+       }
+
        return 0;
 out_add:
        free(key);
@@ -297,6 +330,7 @@ static int parse_header_2013(struct pmhash *hash, char *buffer)
        char *p = buffer;
        char *key;
        char *val;
+       char *tail;
 
 #define parse(field, sz) \
        r = -ENOMEM; \
@@ -328,6 +362,12 @@ static int parse_header_2013(struct pmhash *hash, char *buffer)
        parse("nome", 60);
        parse("uf", 2);
        parse("hash", 10);
+
+       if (p - buffer != RNET_HEADER_HEAD_2013) {
+               fprintf(stderr, "RNET_HEADER_HEAD_2013 in decfile.h needs to be adjusted to %i\n", p - buffer);
+               goto out_val;
+       }
+
        parse("in_cert", 1);
        parse("dt_nasc", 8);
        parse("in_comp", 1);
@@ -395,9 +435,35 @@ static int parse_header_2013(struct pmhash *hash, char *buffer)
        parse("vr_totisentos", 13);
        parse("vr_totexclusivo", 13);
        parse("vr_totpagamentos", 13);
+
+       tail = p;
+
        parse("versaotestpgd", 3);
        parse("controle", 10);
 
+       if (*p++ != '\r') {
+               fprintf(stderr,
+                       "missing CR at the %ith header character\n",
+                       p - buffer);
+               goto out_val;
+       } else if (*p++ != '\n') {
+               fprintf(stderr,
+                       "missing LF at the %ith header character\n",
+                       p - buffer);
+               goto out_val;
+       } else if (*p != 0) {
+               fprintf(stderr,
+                       "missing NUL at the %ith header character\n",
+                       p - buffer);
+               goto out_val;
+       } else if (p - buffer != RNET_HEADER_SIZE_2013) {
+               fprintf(stderr, "RNET_HEADER_SIZE_2013 in decfile.h needs to be adjusted to %i,\nor parse_header in decfile.c needs updating\n", p - buffer);
+               goto out_val;
+       } else if (p - tail != RNET_HEADER_TAIL_2013) {
+               fprintf(stderr, "RNET_HEADER_TAIL_2013 in decfile.h needs to be adjusted to %i\n", p - tail);
+               goto out_val;
+       }
+
        return 0;
 out_add:
        free(key);