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in_calyptia_fleet: get __mkdir to work on non-Unix operating systems. #7969

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Nov 7, 2023
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in_calyptia_fleet: get __mkdir to work on non-Unix operating systems. #7969

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163 changes: 90 additions & 73 deletions plugins/in_calyptia_fleet/in_calyptia_fleet.c
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Original file line number Diff line number Diff line change
Expand Up @@ -720,6 +720,91 @@ ssize_t readlink(const char *path, char *realpath, size_t srealpath) {

#endif

#ifdef FLB_SYSTEM_WINDOWS
#define _mkdir(a, b) mkdir(a)
#else
#define _mkdir(a, b) mkdir(a, b)
#endif

/* recursively create directories, based on:
* https://stackoverflow.com/a/2336245
* who found it at:
* http://nion.modprobe.de/blog/archives/357-Recursive-directory-creation.html
*/
static int __mkdir(const char *dir, int perms) {
char tmp[255];
char *ptr = NULL;
size_t len;
int ret;

ret = snprintf(tmp, sizeof(tmp),"%s",dir);
if (ret > sizeof(tmp)) {
flb_error("directory too long for __mkdir: %s", dir);
return -1;
}

len = strlen(tmp);

if (tmp[len - 1] == PATH_SEPARATOR[0]) {
tmp[len - 1] = 0;
}

#ifndef FLB_SYSTEM_WINDOWS
for (ptr = tmp + 1; *ptr; ptr++) {
#else
for (ptr = tmp + 3; *ptr; ptr++) {
#endif

if (*ptr == PATH_SEPARATOR[0]) {
*ptr = 0;
if (access(tmp, F_OK) != 0) {
ret = _mkdir(tmp, perms);
if (ret != 0) {
return ret;
}
}
*ptr = PATH_SEPARATOR[0];
}
}

return _mkdir(tmp, perms);
}

static int create_fleet_directory(struct flb_in_calyptia_fleet_config *ctx)
{
flb_sds_t myfleetdir;

flb_plg_debug(ctx->ins, "checking for configuration directory=%s", ctx->config_dir);
if (access(ctx->config_dir, F_OK) != 0) {
if (__mkdir(ctx->config_dir, 0700) != 0) {
flb_plg_error(ctx->ins, "unable to create fleet config directory");
return -1;
}
}

myfleetdir = flb_sds_create_size(256);

if (ctx->fleet_name != NULL) {
flb_sds_printf(&myfleetdir, "%s" PATH_SEPARATOR "%s" PATH_SEPARATOR "%s",
ctx->config_dir, ctx->machine_id, ctx->fleet_name);
}
else {
flb_sds_printf(&myfleetdir, "%s" PATH_SEPARATOR "%s" PATH_SEPARATOR "%s",
ctx->config_dir, ctx->machine_id, ctx->fleet_id);
}

flb_plg_debug(ctx->ins, "checking for fleet directory=%s", myfleetdir);
if (access(myfleetdir, F_OK) != 0) {
if (__mkdir(myfleetdir, 0700) !=0) {
flb_plg_error(ctx->ins, "unable to create fleet specific directory");
return -1;
}
}

flb_sds_destroy(myfleetdir);
return 0;
}

/* cb_collect callback */
static int in_calyptia_fleet_collect(struct flb_input_instance *ins,
struct flb_config *config,
Expand Down Expand Up @@ -823,6 +908,10 @@ static int in_calyptia_fleet_collect(struct flb_input_instance *ins,
cfgname = time_fleet_config_filename(ctx, time_last_modified);

if (access(cfgname, F_OK) == -1 && errno == ENOENT) {
if (create_fleet_directory(ctx) != 0) {
flb_plg_error(ctx->ins, "unable to create fleet directories");
goto http_error;
}
cfgfp = fopen(cfgname, "w+");

if (cfgfp == NULL) {
Expand Down Expand Up @@ -941,79 +1030,6 @@ static int in_calyptia_fleet_collect(struct flb_input_instance *ins,
FLB_INPUT_RETURN(ret);
}

#ifdef FLB_SYSTEM_WINDOWS
#define _mkdir(a, b) mkdir(a)
#else
#define _mkdir(a, b) mkdir(a, b)
#endif

/* recursively create directories, based on:
* https://stackoverflow.com/a/2336245
* who found it at:
* http://nion.modprobe.de/blog/archives/357-Recursive-directory-creation.html
*/
static int __mkdir(const char *dir, int perms) {
char tmp[255];
char *ptr = NULL;
size_t len;
int ret;

ret = snprintf(tmp, sizeof(tmp),"%s",dir);
if (ret > sizeof(tmp)) {
return -1;
}

len = strlen(tmp);
if (tmp[len - 1] == '/') {
tmp[len - 1] = 0;
}

for (ptr = tmp + 1; *ptr; ptr++) {
if (*ptr == '/') {
*ptr = 0;
if (access(tmp, F_OK) != 0) {
ret = _mkdir(tmp, perms);
if (ret != 0) {
return ret;
}
}
*ptr = '/';
}
}
return _mkdir(tmp, perms);
}

static int create_fleet_directory(struct flb_in_calyptia_fleet_config *ctx)
{
flb_sds_t myfleetdir;

if (access(ctx->config_dir, F_OK) != 0) {
if (__mkdir(ctx->config_dir, 0700) != 0) {
return -1;
}
}

myfleetdir = flb_sds_create_size(256);

if (ctx->fleet_name != NULL) {
flb_sds_printf(&myfleetdir, "%s" PATH_SEPARATOR "%s" PATH_SEPARATOR "%s",
ctx->config_dir, ctx->machine_id, ctx->fleet_name);
}
else {
flb_sds_printf(&myfleetdir, "%s" PATH_SEPARATOR "%s" PATH_SEPARATOR "%s",
ctx->config_dir, ctx->machine_id, ctx->fleet_id);
}

if (access(myfleetdir, F_OK) != 0) {
if (__mkdir(myfleetdir, 0700) !=0) {
return -1;
}
}

flb_sds_destroy(myfleetdir);
return 0;
}

static int load_fleet_config(struct flb_in_calyptia_fleet_config *ctx)
{
flb_ctx_t *flb_ctx = flb_context_get();
Expand All @@ -1024,6 +1040,7 @@ static int load_fleet_config(struct flb_in_calyptia_fleet_config *ctx)
ssize_t len;

if (create_fleet_directory(ctx) != 0) {
flb_plg_error(ctx->ins, "unable to create fleet directories");
return -1;
}

Expand Down
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