diff options
author | philippe lhardy <pl@artisanlogiciel.net> | 2022-04-25 19:42:16 +0200 |
---|---|---|
committer | Tomas Mraz <tomas@openssl.org> | 2022-11-21 10:49:51 +0100 |
commit | a06a72f797d615eefb47dbc5037cb90f8f87027a (patch) | |
tree | c6599fc4f6fc193b1e9a44c68888cea616ead7a9 /demos/sslecho | |
parent | 0c6bca7908523cd26acfd43c8841a5f199d7b45e (diff) |
fix for sslecho in demos echoing garbage #18165
- getline does set &txbufp content at return, make sure it can be done.
- fixes warning 'passing argument 1 of ‘getline’ from incompatible pointer type'
- remove OPENSSL_free on non allocated fixed size array
- fixes 'free(): invalid pointer'
Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/18177)
(cherry picked from commit 3c0e8bc4a797d29b2152aebc6e687ddfa941160b)
Diffstat (limited to 'demos/sslecho')
-rw-r--r-- | demos/sslecho/main.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/demos/sslecho/main.c b/demos/sslecho/main.c index c6f087c56f..588158e749 100644 --- a/demos/sslecho/main.c +++ b/demos/sslecho/main.c @@ -137,8 +137,9 @@ int main(int argc, char **argv) int server_skt = -1; int client_skt = -1; - char txbuf[128]; - size_t txcap = sizeof(txbuf); + /* used by getline relying on realloc, can't be statically allocated */ + char *txbuf = NULL; + size_t txcap = 0; int txlen; char rxbuf[128]; @@ -286,11 +287,14 @@ int main(int argc, char **argv) while (true) { /* Get a line of input */ txlen = getline(&txbuf, &txcap, stdin); + /* Exit loop on error */ + if (txlen < 0 || txbuf == NULL) { + break; + } /* Exit loop if just a carriage return */ if (txbuf[0] == '\n') { break; } - /* Send it to the server */ if ((result = SSL_write(ssl, txbuf, txlen)) <= 0) { printf("Server closed connection\n"); @@ -331,8 +335,8 @@ int main(int argc, char **argv) if (server_skt != -1) close(server_skt); - OPENSSL_free(txbuf); - OPENSSL_free(rxbuf); + if (txbuf != NULL && txcap > 0) + free(txbuf); printf("sslecho exiting\n"); |