rt/snapraid
1
0
Fork 0
mirror of https://github.com/amadvance/snapraid.git synced 2026-10-26 19:01:57 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

Fail if the PowerShell command is too long

Browse source
This commit is contained in:
Andrea Mazzoleni 2026-07-06 22:41:08 +02:00
parent e32b56d790
commit 39b60e6f28
1 changed files with 9 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

13
cmdline/mingwapp.c
View file

@ -163,13 +163,13 @@ size_t windows_direct_size(void)
#define WINDOWS_NTFS_MAGIC 0x5346544E /* 'N','T','F','S' */
#define PS_CMD_MAX 16384
#define PS_CMD_MAX 16384 /* needs a x4 factor to handle -EncodedCommand */
#define SNAPSHOT_GUID ".guid"
static const char b64chars[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
static void base64_encode(const unsigned char* in, size_t in_len, char* out, size_t out_max)
static int base64_encode(const unsigned char* in, size_t in_len, char* out, size_t out_max)
{
size_t i, j = 0;
for (i = 0; i < in_len; i += 3) {
@ -186,7 +186,7 @@ static void base64_encode(const unsigned char* in, size_t in_len, char* out, siz
}
if (j + 4 >= out_max)
break;
return -1;
out[j++] = b64chars[(val >> 18) & 0x3F];
out[j++] = b64chars[(val >> 12) & 0x3F];
@ -194,6 +194,7 @@ static void base64_encode(const unsigned char* in, size_t in_len, char* out, siz
out[j++] = (count > 2) ? b64chars[val & 0x3F] : '=';
}
out[j] = 0;
return 0;
}
/*
@ -225,7 +226,11 @@ static int windows_ps(const char* ps_command, char* out, size_t out_size)
}
/* base64 encode the UTF-16LE command bytes (excluding the null terminator) */
base64_encode((const unsigned char*)wcmd, (wlen - 1) * sizeof(WCHAR), b64cmd, sizeof(b64cmd));
if (base64_encode((const unsigned char*)wcmd, (wlen - 1) * sizeof(WCHAR), b64cmd, sizeof(b64cmd)) != 0) {
errno = E2BIG;
log_error(errno, "Failed to run PowerShell command '%s' (too big to encode).\n", ps_command);
return -1;
}
ret = snprintf(cmd, sizeof(cmd), "powershell.exe -NoProfile -NonInteractive -EncodedCommand \"%s\" 2>nul", b64cmd);
if (ret < 0 || ret >= (int)sizeof(cmd)) {