Import Upstream version 1.7.2

2025-08-06 17:45:07 +02:00
commit 8035530473
75 changed files with 33406 additions and 0 deletions
--- a/cronie_common.c
+++ b/cronie_common.c
@@ -0,0 +1,140 @@
+#include <string.h>
+#include <ctype.h>
+#include <stdlib.h>
+
+/* Return:
+ * 0 - Not found
+ * 1 - Found */
+static int find_envvar(const char *source, const char **start_pos, size_t *length) {
+    const char *reader;
+    size_t size = 1;
+    int waiting_close = 0;
+    
+    *length = 0;
+    *start_pos = NULL;
+
+    if (source == NULL || *source == '\0') {
+        return 0;
+    }
+
+    *start_pos = strchr(source, '$');
+
+    if (*start_pos == NULL) {
+        return 0;
+    }
+    /* Skip $, since all envvars start with this char */
+    reader = *start_pos + 1;
+    
+    while (*reader != '\0') {
+        if (*reader == '_' || isalnum(*reader)) {
+            if (size <= 2 && isdigit(*reader)) {
+                goto not_found;
+            }
+            size++;
+        } 
+        else if (*reader == '{') {
+            if (size != 1) {
+                goto not_found;
+            }
+            size++;
+            waiting_close = 1;
+        } 
+        else if (*reader == '}') {
+            if ((waiting_close && size == 2) || size == 1) {
+                goto not_found;
+            }
+            
+            if (waiting_close) {
+                size++;
+            }
+            
+            waiting_close = 0;
+            break;
+        } 
+        else
+            break;
+
+        reader++;
+    }
+
+    if (waiting_close) {
+        goto not_found;
+    }
+
+    *length = size;
+    return 1;
+
+not_found:
+    *length = 0;
+    *start_pos = NULL;
+    return 0;
+}
+
+/* Expand env variables in 'source' arg and save to 'result'
+ *  Return:
+ * 1 - Success
+ * 0 - Fail */
+int expand_envvar(const char *source, char *result, size_t max_size) {
+    const char *envvar_p;
+    size_t envvar_name_size = 0;
+
+    *result = '\0';
+
+    while (find_envvar(source, &envvar_p, &envvar_name_size)) {
+        char *envvar_name, *envvar_value;
+        size_t prefix_size;
+        
+        /* Copy content before env var name */
+        prefix_size = envvar_p - source;
+        
+        if (prefix_size > 0) {
+            if ((strlen(result) + prefix_size + 1) > max_size) {
+                goto too_big;
+            }
+            strncat(result, source, prefix_size);
+        }
+        
+        /* skip envvar name */
+        source = envvar_p + envvar_name_size;
+        
+        /* copy envvar name, ignoring $, { and } chars*/
+        envvar_p++; 
+        envvar_name_size--;
+      
+        if (*envvar_p == '{') {
+            envvar_p++;
+            envvar_name_size = envvar_name_size - 2;
+        }
+
+        envvar_name = malloc(envvar_name_size + 1);
+        if (envvar_name == NULL)
+            goto too_big;
+
+        strncpy(envvar_name, envvar_p, envvar_name_size);
+        envvar_name[envvar_name_size] = '\0';
+
+        /* Copy envvar value to result */
+        envvar_value = getenv(envvar_name);
+        free(envvar_name);
+        
+        if (envvar_value != NULL) {
+            if ((strlen(result) + strlen(envvar_value) + 1) > max_size) {
+                goto too_big;
+            }
+            strcat(result, envvar_value);
+        }
+    }
+
+    /* Copy any character left in the source string */
+    if (*source != '\0') {
+        if ((strlen(result) + strlen(source) + 1) > max_size) {
+            goto too_big;
+        }
+        strcat(result, source);
+    }
+    
+    return 1;
+    
+too_big:
+    return 0;
+}