1 files changed, 90 insertions, 0 deletions
diff --git a/config.c b/config.c
new file mode 100644
index 0000000..35fa90e
--- /dev/null
+++ b/config.c
@@ -0,0 +1,90 @@
+#include "config.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+
+unsigned short port = DEFAULT_PORT;
+char *log_path = DEFAULT_LOG_PATH;
+monitor_config_t monitor_config = { .interval = DEFAULT_INTERVAL };
+alert_config_t   alert_config;
+
+int
+config_load(const char *conf_path)
+{
+    FILE *cfgf = fopen(conf_path, "r");
+    if (!cfgf) {
+        fprintf(stderr, "Error opening config: %s\n", strerror(errno));
+        return -1;
+    }
+
+    fseek(cfgf , 0, SEEK_END);
+    size_t cfgsize = ftell(cfgf);
+    rewind(cfgf);
+
+    monitor_config.target_config = malloc(cfgsize);
+    alert_config.alert_config = malloc(cfgsize);
+
+    char *target_pos = monitor_config.target_config;
+    char *alert_pos = alert_config.alert_config;
+
+    printf("config:\n");
+    
+    char line[256];
+    while (fgets(line, sizeof(line), cfgf)) {
+        if (*line == '#' || *line == '\n')
+            continue;
+
+        char *separator = strchr(line, '=');
+        if (!separator) {
+            fprintf(stderr, "[config] malformed line: %s\n", line);
+            continue;
+        }
+
+        *separator = '\0';
+
+        char *value = separator + 1;
+
+        if (strcmp(line, "port") == 0) {
+            port = atoi(value);
+            printf("\tport: %d\n", port);
+            if (port == 0) {
+                fprintf(stderr, "[config] invalid port: %s\n", line);
+                return -1;
+            }
+        } else if (strcmp(line, "interval") == 0) {
+            monitor_config.interval = atoi(value);
+            printf("\tinterval: %ld\n", monitor_config.interval);
+            if (monitor_config.interval == 0) {
+                fprintf(stderr, "[config] invalid interval: %s\n", line);
+                return -1;
+            }
+        } else if (strcmp(line, "log") == 0) {
+            value[strlen(value) - 1] = '\0';
+            log_path = strdup(value);
+            printf("\tlog path: %s\n", log_path);
+        } else if (strcmp(line, "from") == 0) {
+            value[strlen(value) - 1] = '\0';
+            alert_config.from = strdup(value);
+            printf("\tfrom: %s\n", log_path);
+        } else if (strcmp(line, "target") == 0) {
+            target_pos += snprintf(target_pos,
+                cfgsize - (target_pos - monitor_config.target_config),
+                "%s", value);
+        } else if (strcmp(line, "alert") == 0) {
+            target_pos += snprintf(alert_pos,
+                cfgsize - (alert_pos - alert_config.alert_config),
+                "%s", value);
+        } else {
+            fprintf(stderr, "[config] unknown key: %s\n", line);
+            continue;
+        }
+
+    }
+
+    fclose(cfgf);
+
+    return 0;
+}
+