New utilities (not exposed by the API) for various I/O and ipc fill functions

Change-Id: I0bd1d7781971f217903f307b5ac418180afc0d50
Signed-off-by: Paul Kocialkowski <contact@paulk.fr>

6 files changed, 359 insertions, 11 deletions

diff --git a/Android.mk b/Android.mk
index 07ebe8d..e1f635e 100644
--- a/Android.mk
+++ b/Android.mk
@@ -60,6 +60,7 @@ samsung-ipc_files := \
 	samsung-ipc/net.c \
 	samsung-ipc/sec.c \
 	samsung-ipc/sms.c \
+	samsung-ipc/util.c \
 	samsung-ipc/device/crespo/crespo_ipc.c \
 	samsung-ipc/device/aries/aries_ipc.c \
 	samsung-ipc/device/xmm6260/xmm6260_loader.c \
diff --git a/include/samsung-ipc.h b/include/samsung-ipc.h
index 02d2e07..b68f6fc 100644
--- a/include/samsung-ipc.h
+++ b/include/samsung-ipc.h
@@ -37,6 +37,7 @@
 
 struct ipc_client;
 struct ipc_handlers;
+struct ipc_header;
 
 struct ipc_message_info {
     unsigned char mseq;
@@ -106,20 +107,16 @@ char *ipc_client_gprs_get_iface(struct ipc_client *client, int cid);
 int ipc_client_gprs_get_capabilities(struct ipc_client *client,
     struct ipc_client_gprs_capabilities *capabilities);
 
-/* Utility functions */
-void ipc_client_log_recv(struct ipc_client *client,
-    struct ipc_message_info *response, const char *prefix);
-void ipc_client_log_send(struct ipc_client *client,
-    struct ipc_message_info *request, const char *prefix);
 const char *ipc_response_type_to_str(int type);
 const char *ipc_request_type_to_str(int type);
 const char *ipc_command_to_str(int command);
-
 void ipc_client_hex_dump(struct ipc_client *client, void *data, int size);
-void *ipc_client_mtd_read(struct ipc_client *client, char *mtd_name, int size,
-    int block_size);
-void *ipc_client_file_read(struct ipc_client *client, char *file_name, int size,
-    int block_size);
+void ipc_client_log_recv(struct ipc_client *client,
+    struct ipc_message_info *response, const char *prefix);
+void ipc_client_log_send(struct ipc_client *client,
+    struct ipc_message_info *request, const char *prefix);
+void ipc_header_fill(struct ipc_header *header, struct ipc_message_info *message);
+void ipc_message_info_fill(struct ipc_header *header, struct ipc_message_info *message);
 
 /*
  * Samsung-IPC protocol
diff --git a/samsung-ipc/Makefile.am b/samsung-ipc/Makefile.am
index d303310..25d730f 100644
--- a/samsung-ipc/Makefile.am
+++ b/samsung-ipc/Makefile.am
@@ -27,8 +27,10 @@ libsamsung_ipc_la_SOURCES = \
 	gprs.c \
 	call.c \
 	net.c \
+	util.c \
 	ipc.h \
 	ipc_devices.h \
+	util.h \
 	device/crespo/crespo_ipc.c \
 	device/aries/aries_ipc.c \
 	device/aries/sipc4.h \
diff --git a/samsung-ipc/ipc_util.c b/samsung-ipc/ipc_util.c
index 2eb54ef..6ec54f2 100644
--- a/samsung-ipc/ipc_util.c
+++ b/samsung-ipc/ipc_util.c
@@ -1,6 +1,7 @@
 /*
  * This file is part of libsamsung-ipc.
  *
+ * Copyright (C) 2013 Paul Kocialkowski <contact@paulk.fr>
  * Copyright (C) 2010-2011 Joerie de Gram <j.de.gram@gmail.com>
  *
  * libsamsung-ipc is free software: you can redistribute it and/or modify
@@ -19,6 +20,7 @@
  */
 
 #include <stdio.h>
+#include <stdlib.h>
 #include <stdint.h>
 #include <string.h>
 #include <fcntl.h>
@@ -30,7 +32,6 @@
 #include <mtd/mtd-abi.h>
 
 #include <samsung-ipc.h>
-
 #include "ipc.h"
 
 /* Log utils */
@@ -442,6 +443,36 @@ void ipc_client_log_send(struct ipc_client *client,
     }
 }
 
+void ipc_header_fill(struct ipc_header *header, struct ipc_message_info *message)
+{
+    if (header == NULL || message == NULL)
+        return;
+
+    memset(header, 0, sizeof(struct ipc_header));
+    header->mseq = message->mseq;
+    header->aseq = message->aseq;
+    header->group = message->group;
+    header->index = message->index;
+    header->type = message->type;
+    header->length = message->length + sizeof(struct ipc_header);
+}
+
+void ipc_message_info_fill(struct ipc_header *header, struct ipc_message_info *message)
+{
+    if (header == NULL || message == NULL)
+        return;
+
+    memset(message, 0, sizeof(struct ipc_message_info));
+    message->mseq = header->mseq;
+    message->aseq = header->aseq;
+    message->group = header->group;
+    message->index = header->index;
+    message->type = header->type;
+    message->cmd = IPC_COMMAND(message);
+    message->length = 0;
+    message->data = NULL;
+}
+
 void *ipc_client_mtd_read(struct ipc_client *client, char *mtd_name, int size,
     int block_size)
 {
diff --git a/samsung-ipc/util.c b/samsung-ipc/util.c
new file mode 100644
index 0000000..85fffcb
--- /dev/null
+++ b/samsung-ipc/util.c
@@ -0,0 +1,282 @@
+/*
+ * This file is part of libsamsung-ipc.
+ *
+ * Copyright (C) 2013 Paul Kocialkowski <contact@paulk.fr>
+ *
+ * libsamsung-ipc is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * libsamsung-ipc is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with libsamsung-ipc.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <fcntl.h>
+#include <ctype.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <asm/types.h>
+#include <mtd/mtd-abi.h>
+#include <linux/netlink.h>
+#include <net/if.h>
+
+#include "util.h"
+
+void *file_data_read(char *path, int size, int block_size)
+{
+    void *data = NULL;
+    int fd = -1;
+
+    unsigned char *p;
+    int count;
+    int rc;
+
+    if (path == NULL || size <= 0 || block_size <= 0)
+        return NULL;
+
+    fd = open(path, O_RDONLY);
+    if (fd < 0)
+        goto error;
+
+    data = malloc(size);
+    memset(data, 0, size);
+
+    p = (unsigned char *) data;
+
+    count = 0;
+    while (count < size) {
+        rc = read(fd, p, size - count > block_size ? block_size : size - count);
+        if (rc < 0)
+            goto error;
+
+        p += rc;
+        count += rc;
+    }
+
+    goto complete;
+
+error:
+    if (data != NULL)
+        free(data);
+    data = NULL;
+
+complete:
+    if (fd >= 0)
+        close(fd);
+
+    return data;
+}
+
+int network_iface_up(char *iface, int domain, int type)
+{
+    struct ifreq ifr;
+    int fd = -1;
+    int rc;
+
+    if (iface == NULL)
+        return -1;
+
+    memset(&ifr, 0, sizeof(ifr));
+    strncpy(ifr.ifr_name, iface, IFNAMSIZ);
+
+    fd = socket(domain, type, 0);
+    if (fd < 0)
+        goto error;
+
+    rc = ioctl(fd, SIOCGIFFLAGS, &ifr);
+    if (rc < 0)
+        goto error;
+
+    ifr.ifr_flags |= IFF_UP;
+
+    rc = ioctl(fd, SIOCSIFFLAGS, &ifr);
+    if (rc < 0)
+        goto error;
+
+    rc = 0;
+    goto complete;
+
+error:
+    rc = -1;
+
+complete:
+    if (fd >= 0)
+        close(fd);
+
+    return rc;
+}
+
+int network_iface_down(char *iface, int domain, int type)
+{
+    struct ifreq ifr;
+    int fd = -1;
+    int rc;
+
+    if (iface == NULL)
+        return -1;
+
+    memset(&ifr, 0, sizeof(ifr));
+    strncpy(ifr.ifr_name, iface, IFNAMSIZ);
+
+    fd = socket(domain, type, 0);
+    if (fd < 0)
+        goto error;
+
+    rc = ioctl(fd, SIOCGIFFLAGS, &ifr);
+    if (rc < 0)
+        goto error;
+
+    ifr.ifr_flags = (ifr.ifr_flags & (~IFF_UP));
+
+    rc = ioctl(fd, SIOCSIFFLAGS, &ifr);
+    if (rc < 0)
+        goto error;
+
+    rc = 0;
+    goto complete;
+
+error:
+    rc = -1;
+
+complete:
+    if (fd >= 0)
+        close(fd);
+
+    return rc;
+}
+
+int sysfs_value_read(char *path)
+{
+    char buffer[100];
+    int value;
+    int fd = -1;
+    int rc;
+
+    if (path == NULL)
+        return -1;
+
+    fd = open(path, O_RDONLY);
+    if (fd < 0)
+        goto error;
+
+    rc = read(fd, &buffer, sizeof(buffer));
+    if (rc <= 0)
+        goto error;
+
+    value = atoi(buffer);
+    goto complete;
+
+error:
+    value = -1;
+
+complete:
+    if (fd >= 0)
+        close(fd);
+
+    return value;
+}
+
+int sysfs_value_write(char *path, int value)
+{
+    char buffer[100];
+    int fd = -1;
+    int rc;
+
+    if (path == NULL)
+        return -1;
+
+    fd = open(path, O_WRONLY);
+    if (fd < 0)
+        goto error;
+
+    snprintf((char *) &buffer, sizeof(buffer), "%d\n", value);
+
+    rc = write(fd, buffer, strlen(buffer));
+    if (rc < (int) strlen(buffer))
+        goto error;
+
+    rc = 0;
+    goto complete;
+
+error:
+    rc = -1;
+
+complete:
+    if (fd >= 0)
+        close(fd);
+
+    return rc;
+}
+
+int sysfs_string_read(char *path, char *buffer, int length)
+{
+    int fd = -1;
+    int rc;
+
+    if (path == NULL || buffer == NULL || length <= 0)
+        return -1;
+
+    fd = open(path, O_RDONLY);
+    if (fd < 0)
+        goto error;
+
+    rc = read(fd, buffer, length);
+    if (rc <= 0)
+        goto error;
+
+    rc = 0;
+    goto complete;
+
+error:
+    rc = -1;
+
+complete:
+    if (fd >= 0)
+        close(fd);
+
+    return rc;
+}
+
+int sysfs_string_write(char *path, char *buffer, int length)
+{
+    int fd = -1;
+    int rc;
+
+    if (path == NULL || buffer == NULL || length <= 0)
+        return -1;
+
+    fd = open(path, O_WRONLY);
+    if (fd < 0)
+        goto error;
+
+    rc = write(fd, buffer, length);
+    if (rc <= 0)
+        goto error;
+
+    rc = 0;
+    goto complete;
+
+error:
+    rc = -1;
+
+complete:
+    if (fd >= 0)
+        close(fd);
+
+    return rc;
+}
+
+// vim:ts=4:sw=4:expandtab
diff --git a/samsung-ipc/util.h b/samsung-ipc/util.h
new file mode 100644
index 0000000..c2a36a1
--- /dev/null
+++ b/samsung-ipc/util.h
@@ -0,0 +1,35 @@
+/*
+ * This file is part of libsamsung-ipc.
+ *
+ * Copyright (C) 2013 Paul Kocialkowski <contact@paulk.fr>
+ * Copyright (C) 2010-2011 Joerie de Gram <j.de.gram@gmail.com>
+ *
+ * libsamsung-ipc is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * libsamsung-ipc is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with libsamsung-ipc.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef __UTIL_H__
+#define __UTIL_H__
+
+void *file_data_read(char *file_name, int size, int block_size);
+int network_iface_up(char *iface, int domain, int type);
+int network_iface_down(char *iface, int domain, int type);
+int sysfs_value_read(char *path);
+int sysfs_value_write(char *path, int value);
+int sysfs_string_read(char *path, char *buffer, int length);
+int sysfs_string_write(char *path, char *buffer, int length);
+
+#endif
+
+// vim:ts=4:sw=4:expandtab