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fix: memory/null safety bugs — issues #74, #72, #69, #64, #60, #50, #49, #65
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This commit is contained in:
TapTap
2026-07-20 18:44:10 +02:00
parent 504a3a4d4f
commit 4dbb2b4f8b
9 changed files with 144 additions and 18 deletions
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src/shared/transport_ssh.c
+13 -1
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@@ -124,7 +124,10 @@ Client* client_connect_ssh(const char* destination, int port) {
else
snprintf(ssh_user, sizeof(ssh_user), "%s", r.host);
char* ssh_argv[16];
size_t ssh_argv_max = 32;
char** ssh_argv = calloc(ssh_argv_max, sizeof(char*));
if (ssh_argv == NULL)
_exit(1);
int ac = 0;
char port_str[16];
ssh_argv[ac++] = "ssh";
@@ -135,15 +138,24 @@ Client* client_connect_ssh(const char* destination, int port) {
ssh_argv[ac++] = "-o";
ssh_argv[ac++] = "ControlPath=~/.cache/fastsync-%r@%h:%p";
if (port > 0 && port != 22) {
if ((size_t)ac + 2 >= ssh_argv_max) {
free(ssh_argv);
_exit(1);
}
ssh_argv[ac++] = "-p";
snprintf(port_str, sizeof(port_str), "%d", port);
ssh_argv[ac++] = port_str;
}
if ((size_t)ac + 3 >= ssh_argv_max) {
free(ssh_argv);
_exit(1);
}
ssh_argv[ac++] = ssh_user;
ssh_argv[ac++] = "fastsync-server";
ssh_argv[ac++] = "--stdio";
ssh_argv[ac] = NULL;
execvp("ssh", ssh_argv);
free(ssh_argv);
perror("exec of ssh failed");
ssize_t wret = write(exec_pipe[1], "x", 1);
(void)wret;