From 0a2734dfb5ae312f5283f93ab2e3f819ace3f94b Mon Sep 17 00:00:00 2001
From: Adam Soltys <asoltys@gmail.com>
Date: Tue, 8 Oct 2024 20:13:48 -0700
Subject: nostr revamp wip

---
 server.c | 124 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 124 insertions(+)
 create mode 100644 server.c

(limited to 'server.c')

diff --git a/server.c b/server.c
new file mode 100644
index 00000000..cd49f18b
--- /dev/null
+++ b/server.c
@@ -0,0 +1,124 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <unistd.h>
+
+#define SOCKET_PATH "/sockets/ctrl"
+#define BUFFER_SIZE 1024
+
+void handle_client(const char *result_socket, const char *command);
+
+int main() {
+  int server_fd, client_fd;
+  struct sockaddr_un server_addr;
+  char buffer[BUFFER_SIZE];
+
+  unlink(SOCKET_PATH);
+
+  server_fd = socket(AF_UNIX, SOCK_STREAM, 0);
+  if (server_fd == -1) {
+    perror("socket failed");
+    exit(EXIT_FAILURE);
+  }
+
+  memset(&server_addr, 0, sizeof(struct sockaddr_un));
+  server_addr.sun_family = AF_UNIX;
+  strncpy(server_addr.sun_path, SOCKET_PATH, sizeof(server_addr.sun_path) - 1);
+
+  if (bind(server_fd, (struct sockaddr *)&server_addr,
+           sizeof(struct sockaddr_un)) == -1) {
+    perror("bind failed");
+    close(server_fd);
+    exit(EXIT_FAILURE);
+  }
+
+  if (listen(server_fd, 5) == -1) {
+    perror("listen failed");
+    close(server_fd);
+    exit(EXIT_FAILURE);
+  }
+
+  printf("Server listening on %s\n", SOCKET_PATH);
+
+  while (1) {
+
+    client_fd = accept(server_fd, NULL, NULL);
+    if (client_fd == -1) {
+      perror("accept failed");
+      continue;
+    }
+
+    memset(buffer, 0, BUFFER_SIZE);
+    ssize_t num_bytes = read(client_fd, buffer, BUFFER_SIZE - 1);
+    if (num_bytes > 0) {
+
+      buffer[num_bytes] = '\0';
+
+      printf("Received: %s\n", buffer);
+
+      char result_socket[BUFFER_SIZE], command[BUFFER_SIZE];
+      if (sscanf(buffer, "%s %[^\n]", result_socket, command) == 2) {
+        printf("Result socket: %s\n", result_socket);
+        printf("Command: %s\n", command);
+
+        handle_client(result_socket, command);
+      } else {
+        fprintf(stderr, "Invalid input format\n");
+      }
+    }
+
+    close(client_fd);
+  }
+
+  close(server_fd);
+  unlink(SOCKET_PATH);
+  return 0;
+}
+
+void handle_client(const char *result_socket, const char *command) {
+  pid_t pid = fork();
+
+  if (pid == 0) {
+
+    int result_fd = socket(AF_UNIX, SOCK_STREAM, 0);
+    if (result_fd == -1) {
+      perror("result socket failed");
+      exit(EXIT_FAILURE);
+    }
+
+    struct sockaddr_un result_addr;
+    memset(&result_addr, 0, sizeof(struct sockaddr_un));
+    result_addr.sun_family = AF_UNIX;
+    strncpy(result_addr.sun_path, result_socket,
+            sizeof(result_addr.sun_path) - 1);
+
+    if (connect(result_fd, (struct sockaddr *)&result_addr,
+                sizeof(struct sockaddr_un)) == -1) {
+      perror("connect to result socket failed");
+      close(result_fd);
+      exit(EXIT_FAILURE);
+    }
+
+    FILE *cmd_output = popen(command, "r");
+    if (cmd_output == NULL) {
+      perror("popen failed");
+      close(result_fd);
+      exit(EXIT_FAILURE);
+    }
+
+    char output_buffer[BUFFER_SIZE];
+    while (fgets(output_buffer, sizeof(output_buffer), cmd_output) != NULL) {
+      write(result_fd, output_buffer, strlen(output_buffer));
+    }
+
+    pclose(cmd_output);
+    shutdown(result_fd, SHUT_WR);
+    close(result_fd);
+    unlink(result_socket);
+    exit(0);
+  } else if (pid < 0) {
+    perror("fork failed");
+  }
+}
-- 
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