initial commit

.gitignore

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+*.out
+*.o
+android-receiver

Makefile

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+
+include config.mk
+
+SRC = mail-query.c
+OBJ = ${SRC:.c=.o}
+
+all: android-receiver
+
+.c.o:
+	${CC} -c ${CFLAGS} $<
+
+${OBJ}: config.mk
+mail-query: ${OBJ}
+	${CC} -o $@ ${OBJ} ${LDFLAGS}
+
+
+clean:
+	rm -f android-receiver ${OBJ}
+
+.PHONY: all clean

README.md

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+# Android Receiver
+
+Listen for broadcast messages from 
+[android-notifer](http://code.google.com/p/android-notifier/) coming 
+over a specific port.
+
+Format that message (todo) and pass it off to a handling application 
+like notify-osd, dzen2, or some other script.
+
+Done mostly as a learning exercise in C.

android-receiver.c

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+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <netinet/in.h>
+#include <sys/socket.h>
+
+int   execvp(const char *file, char *const argv[]);
+void  bzero(void *s, size_t n);
+pid_t fork(void);
+
+void error(char *msg);
+void handle_message(char *msg);
+
+/* error and die */
+void error(char *msg)
+{
+    perror(msg);
+    exit(EXIT_FAILURE);
+}
+
+/* for now we just hand off to my existing bash script */
+void handle_message(char *msg)
+{
+  char *app = "dzen-handler";
+  char *flags[] = {app, msg, NULL};
+
+  printf("executing handler: %s %s\n", flags[0], flags[1]);
+  execvp(app, flags);
+}
+
+/* connect to <port> and listen for messages */
+int main(int argc, char *argv[])
+{
+  unsigned int fromlen;
+  int          sock;
+  int          length;
+  int          n;
+
+  struct sockaddr_in server;
+  struct sockaddr_in from;
+
+  char buf[1024];
+
+  pid_t pid;
+
+  if (argc != 2) {
+    fprintf(stderr, "argc was %i\n", argc);
+    fprintf(stderr, "saw %s, %s, %s\n", argv[0], argv[1], argv[2]);
+    fprintf(stderr, "usage: %s <port>\n", argv[0]);
+    return(EXIT_FAILURE);
+  }
+
+  sock = socket(AF_INET, SOCK_DGRAM, 0);
+
+  if (sock < 0) 
+    error("Opening socket");
+
+  length = sizeof(server);
+
+  bzero(&server,length);
+
+  server.sin_family      = AF_INET;
+  server.sin_addr.s_addr = INADDR_ANY;
+  server.sin_port        = htons(atoi(argv[1]));
+
+  if (bind(sock, (struct sockaddr *)&server, length) < 0) 
+    error("binding");
+
+  fromlen = sizeof(struct sockaddr_in);
+
+  while (1) {
+    n = recvfrom(sock, buf, 1024, 0, (struct sockaddr * restrict)&from, &fromlen);
+
+    if (n < 0) 
+      error("recvfrom");
+
+    pid = fork();
+
+    if (pid == 0)
+      handle_message(buf);
+  }
+}

config.mk

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+# version
+VERSION = $(shell git describe)
+
+# paths
+PREFIX ?= /usr/local
+MANPREFIX ?= ${PREFIX}/share/man
+
+# compiler flags
+CC = c99
+CPPFLAGS =
+CFLAGS += -g -pedantic -Wall -Wextra ${CPPFLAGS}
+LDFLAGS =
+