diff options
Diffstat (limited to 'vcs-svn/svndump.c')
| -rw-r--r-- | vcs-svn/svndump.c | 29 |
1 files changed, 26 insertions, 3 deletions
diff --git a/vcs-svn/svndump.c b/vcs-svn/svndump.c index e6d84bada5..15f822ea84 100644 --- a/vcs-svn/svndump.c +++ b/vcs-svn/svndump.c @@ -149,6 +149,13 @@ static void handle_property(uint32_t key, const char *val, uint32_t len, } } +static void die_short_read(void) +{ + if (buffer_ferror(&input)) + die_errno("error reading dump file"); + die("invalid dump: unexpected end of file"); +} + static void read_props(void) { uint32_t key = ~0; @@ -170,12 +177,21 @@ static void read_props(void) uint32_t len; const char *val; const char type = t[0]; + int ch; if (!type || t[1] != ' ') die("invalid property line: %s\n", t); len = atoi(&t[2]); val = buffer_read_string(&input, len); - buffer_skip_bytes(&input, 1); /* Discard trailing newline. */ + if (!val || strlen(val) != len) + die_short_read(); + + /* Discard trailing newline. */ + ch = buffer_read_char(&input); + if (ch == EOF) + die_short_read(); + if (ch != '\n') + die("invalid dump: expected newline after %s", val); switch (type) { case 'K': @@ -344,7 +360,11 @@ void svndump_read(const char *url) node_ctx.prop_delta = !strcmp(val, "true"); } else if (key == keys.content_length) { len = atoi(val); - buffer_read_line(&input); + t = buffer_read_line(&input); + if (!t) + die_short_read(); + if (*t) + die("invalid dump: expected blank line after content length header"); if (active_ctx == REV_CTX) { read_props(); } else if (active_ctx == NODE_CTX) { @@ -352,10 +372,13 @@ void svndump_read(const char *url) active_ctx = REV_CTX; } else { fprintf(stderr, "Unexpected content length header: %"PRIu32"\n", len); - buffer_skip_bytes(&input, len); + if (buffer_skip_bytes(&input, len) != len) + die_short_read(); } } } + if (buffer_ferror(&input)) + die_short_read(); if (active_ctx == NODE_CTX) handle_node(); if (active_ctx != DUMP_CTX) |