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#define _POSIX_C_SOURCE 200809
#include <libgen.h>
#include <strings.h>
#include <unistd.h>
#include <wordexp.h>
#include <errno.h>
#include "sway/commands.h"
#include "sway/config.h"
#include "sway/swaynag.h"
#include "log.h"
#include "stringop.h"
static const char *bg_options[] = {
"stretch",
"center",
"fill",
"fit",
"tile",
};
struct cmd_results *output_cmd_background(int argc, char **argv) {
if (!config->handler_context.output_config) {
return cmd_results_new(CMD_FAILURE, "output", "Missing output config");
}
if (!argc) {
return cmd_results_new(CMD_INVALID, "output",
"Missing background file or color specification.");
}
if (argc < 2) {
return cmd_results_new(CMD_INVALID, "output",
"Missing background scaling mode or `solid_color`.");
}
struct output_config *output = config->handler_context.output_config;
if (strcasecmp(argv[1], "solid_color") == 0) {
output->background = calloc(1, strlen(argv[0]) + 3);
snprintf(output->background, strlen(argv[0]) + 3, "\"%s\"", argv[0]);
output->background_option = strdup("solid_color");
output->background_fallback = NULL;
argc -= 2; argv += 2;
} else {
bool valid = false;
char *mode;
size_t j;
for (j = 0; j < (size_t)argc; ++j) {
mode = argv[j];
size_t n = sizeof(bg_options) / sizeof(char *);
for (size_t k = 0; k < n; ++k) {
if (strcasecmp(mode, bg_options[k]) == 0) {
valid = true;
break;
}
}
if (valid) {
break;
}
}
if (!valid) {
return cmd_results_new(CMD_INVALID, "output",
"Missing background scaling mode.");
}
wordexp_t p = {0};
char *src = join_args(argv, j);
while (strstr(src, " ")) {
src = realloc(src, strlen(src) + 2);
char *ptr = strstr(src, " ") + 1;
memmove(ptr + 1, ptr, strlen(ptr) + 1);
*ptr = '\\';
}
if (wordexp(src, &p, 0) != 0 || p.we_wordv[0] == NULL) {
struct cmd_results *cmd_res = cmd_results_new(CMD_INVALID, "output",
"Invalid syntax (%s)", src);
free(src);
wordfree(&p);
return cmd_res;
}
free(src);
src = join_args(p.we_wordv, p.we_wordc);
wordfree(&p);
if (!src) {
wlr_log(WLR_ERROR, "Failed to duplicate string");
return cmd_results_new(CMD_FAILURE, "output",
"Unable to allocate resource");
}
if (config->reading && *src != '/') {
// src file is inside configuration dir
char *conf = strdup(config->current_config_path);
if (!conf) {
wlr_log(WLR_ERROR, "Failed to duplicate string");
free(src);
return cmd_results_new(CMD_FAILURE, "output",
"Unable to allocate resources");
}
char *conf_path = dirname(conf);
char *rel_path = src;
src = malloc(strlen(conf_path) + strlen(src) + 2);
if (!src) {
free(rel_path);
free(conf);
wlr_log(WLR_ERROR, "Unable to allocate memory");
return cmd_results_new(CMD_FAILURE, "output",
"Unable to allocate resources");
}
sprintf(src, "%s/%s", conf_path, rel_path);
free(rel_path);
free(conf);
}
bool can_access = access(src, F_OK) != -1;
if (!can_access) {
wlr_log(WLR_ERROR, "Unable to access background file '%s': %s",
src, strerror(errno));
if (config->reading && !config->validating) {
swaynag_log(config->swaynag_command,
&config->swaynag_config_errors,
"Unable to access background file '%s'", src);
}
free(src);
} else {
// Escape spaces and quotes in the final path for swaybg
for (size_t i = 0; i < strlen(src); i++) {
switch (src[i]) {
case ' ':
case '\'':
case '\"':
src = realloc(src, strlen(src) + 2);
memmove(src + i + 1, src + i, strlen(src + i) + 1);
*(src + i) = '\\';
i++;
break;
default:
break;
}
}
output->background = src;
output->background_option = strdup(mode);
}
argc -= j + 1; argv += j + 1;
output->background_fallback = NULL;
if (argc && *argv[0] == '#') {
output->background_fallback = calloc(1, strlen(argv[0]) + 3);
snprintf(output->background_fallback, strlen(argv[0]) + 3,
"\"%s\"", argv[0]);
argc--; argv++;
if (!can_access) {
output->background = output->background_fallback;
output->background_option = strdup("solid_color");
output->background_fallback = NULL;
}
}
}
config->handler_context.leftovers.argc = argc;
config->handler_context.leftovers.argv = argv;
return NULL;
}
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