From abbe8f79355cc7aa2ef906c626c1a43ea4762d88 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Jos=C3=A9=20Bollo?= <jose.bollo@iot.bzh>
Date: Sun, 17 Apr 2016 18:33:41 +0200
Subject: [PATCH] set download path
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Change-Id: Ib42157297a868056ab20338b806cc06e5322b274
Signed-off-by: José Bollo <jose.bollo@iot.bzh>
---
 src/afb-hreq.c | 44 +++++++++++++++++++++++++++++++++++++++++++-
 src/afb-hreq.h |  1 +
 src/main.c     |  5 +++++
 3 files changed, 49 insertions(+), 1 deletion(-)

diff --git a/src/afb-hreq.c b/src/afb-hreq.c
index 8a0b2804..93cce62b 100644
--- a/src/afb-hreq.c
+++ b/src/afb-hreq.c
@@ -52,6 +52,7 @@ static const char token_cookie[] = "token";
 
 static char *cookie_name = NULL;
 static char *cookie_setter = NULL;
+static char *tmp_pattern = NULL;
 
 struct hreq_data {
 	struct hreq_data *next;
@@ -492,12 +493,53 @@ int afb_hreq_post_add(struct afb_hreq *hreq, const char *key, const char *data,
 	return 1;
 }
 
+int afb_hreq_init_download_path(const char *directory)
+{
+	struct stat st;
+	size_t n;
+	char *p;
+
+	if (access(directory, R_OK|W_OK)) {
+		/* no read/write access */
+		return -1;
+	}
+	if (stat(directory, &st)) {
+		/* can't get info */
+		return -1;
+	}
+	if (!S_ISDIR(st.st_mode)) {
+		/* not a directory */
+		errno = ENOTDIR;
+		return -1;
+	}
+	n = strlen(directory);
+	while(n > 1 && directory[n-1] == '/') n--;
+	p = malloc(n + 8);
+	if (p == NULL) {
+		/* can't allocate memory */
+		errno = ENOMEM;
+		return -1;
+	}
+	memcpy(p, directory, n);
+	p[n++] = '/';
+	p[n++] = 'X';
+	p[n++] = 'X';
+	p[n++] = 'X';
+	p[n++] = 'X';
+	p[n++] = 'X';
+	p[n++] = 'X';
+	p[n] = 0;
+	free(tmp_pattern);
+	tmp_pattern = p;
+	return 0;
+}
+
 static int opentempfile(char **path)
 {
 	int fd;
 	char *fname;
 
-	fname = strdup("XXXXXX"); /* TODO improve the path */
+	fname = strdup(tmp_pattern ? : "XXXXXX"); /* TODO improve the path */
 	if (fname == NULL)
 		return -1;
 
diff --git a/src/afb-hreq.h b/src/afb-hreq.h
index aa2cf117..f717cc8d 100644
--- a/src/afb-hreq.h
+++ b/src/afb-hreq.h
@@ -74,3 +74,4 @@ extern void afb_hreq_reply_free(struct afb_hreq *hreq, unsigned status, size_t s
 
 extern void afb_hreq_reply_empty(struct afb_hreq *hreq, unsigned status, ...);
 
+extern int afb_hreq_init_download_path(const char *directory);
diff --git a/src/main.c b/src/main.c
index d8065e42..e899739c 100644
--- a/src/main.c
+++ b/src/main.c
@@ -516,6 +516,11 @@ static struct afb_hsrv *start_http_server(struct afb_config * config)
 	int rc;
 	struct afb_hsrv *hsrv;
 
+	if (afb_hreq_init_download_path("/tmp")) { /* TODO: sessiondir? */
+		fprintf(stderr, "unable to set the tmp directory\n");
+		return NULL;
+	}
+
 	hsrv = afb_hsrv_create();
 	if (hsrv == NULL) {
 		fprintf(stderr, "memory allocation failure\n");
-- 
2.16.6