From 89b7b67a13ebb7965cc7f13ad0595e2194a2d34c Mon Sep 17 00:00:00 2001
From: Jannis Hoffmann <jannis@fehcom.de>
Date: Wed, 3 Jul 2024 15:48:04 +0200
Subject: add sqmail-4.2.29a

---
 src/install.c | 139 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 139 insertions(+)
 create mode 100644 src/install.c

(limited to 'src/install.c')

diff --git a/src/install.c b/src/install.c
new file mode 100644
index 0000000..c738fb7
--- /dev/null
+++ b/src/install.c
@@ -0,0 +1,139 @@
+#include <unistd.h>
+#include <sys/stat.h>
+#include "buffer.h"
+#include "logmsg.h"
+#include "open.h"
+#include "exit.h"
+#include "fifo.h"
+
+extern void hier();
+
+#define WHO "install"
+
+int fdsourcedir = -1;
+
+void h(char *home,int uid,int gid,int mode)
+{
+  if (mkdir(home,0700) == -1)
+    if (errno != EEXIST)
+      logmsg(WHO,111,FATAL,B("unable to mkdir: ",home));
+  if (chown(home,uid,gid) == -1)
+    logmsg(WHO,111,FATAL,B("unable to chown: ",home));
+  if (chmod(home,mode) == -1)
+    logmsg(WHO,111,FATAL,B("unable to chmod: ",home));
+}
+
+void d(char *home,char *subdir,int uid,int gid,int mode)
+{
+  if (chdir(home) == -1)
+    logmsg(WHO,110,FATAL,B("unable to switch to: ",home));
+  if (mkdir(subdir,0700) == -1)
+    if (errno != EEXIST)
+      logmsg(WHO,111,FATAL,B("unable to mkdir: ",home,"/",subdir));
+  if (chown(subdir,uid,gid) == -1)
+    logmsg(WHO,111,FATAL,B("unable to chown: ",home,"/",subdir));
+  if (chmod(subdir,mode) == -1)
+    logmsg(WHO,111,FATAL,B("unable to chmod: ",home,"/",subdir));
+}
+
+void p(char *home,char *fifo,int uid,int gid,int mode)
+{
+  if (chdir(home) == -1)
+    logmsg(WHO,110,FATAL,B("unable to switch to: ",home));
+  if (fifo_make(fifo,0700) == -1)
+    if (errno != EEXIST)
+      logmsg(WHO,111,FATAL,B("unable to mkfifo: ",home,"/",fifo));
+  if (chown(fifo,uid,gid) == -1)
+    logmsg(WHO,111,FATAL,B("unable to chown: ",home,"/",fifo));
+  if (chmod(fifo,mode) == -1)
+    logmsg(WHO,111,FATAL,B("unable to chmod: ",home,"/",fifo));
+}
+
+char inbuf[BUFFER_INSIZE];
+buffer bi;
+char outbuf[BUFFER_OUTSIZE];
+buffer bo;
+
+void c(char *home,char *subdir,char *file,int uid,int gid,int mode)
+{
+  int fdin;
+  int fdout;
+
+  if (fchdir(fdsourcedir) == -1)
+    logmsg(WHO,110,FATAL,"unable to switch back to source directory: ");
+
+  fdin = open_read(file);
+  if (fdin == -1)
+    logmsg(WHO,111,FATAL,B("unable to read: ",file));
+  buffer_init(&bi,read,fdin,inbuf,sizeof(inbuf));
+
+  if (chdir(home) == -1)
+    logmsg(WHO,110,FATAL,B("unable to switch to: ",home));
+  if (chdir(subdir) == -1)
+    logmsg(WHO,110,FATAL,B("unable to switch to: ",home,"/",subdir));
+
+  fdout = open_trunc(file);
+  if (fdout == -1)
+    logmsg(WHO,111,FATAL,B("unable to write .../",subdir,"/",file));
+  buffer_init(&bo,write,fdout,outbuf,sizeof(outbuf));
+
+  switch (buffer_copy(&bo,&bi)) {
+    case -2:
+      logmsg(WHO,111,FATAL,B("unable to read: ",file));
+    case -3:
+      logmsg(WHO,111,FATAL,B("unable to write .../",subdir,"/",file));
+  }
+
+  close(fdin);
+  if (buffer_flush(&bo) == -1)
+    logmsg(WHO,111,FATAL,B("unable to write .../",subdir,"/",file));
+  if (fsync(fdout) == -1)
+    logmsg(WHO,111,FATAL,B("unable to write .../",subdir,"/",file));
+  if (close(fdout) == -1) /* NFS silliness */
+    logmsg(WHO,111,FATAL,B("unable to write .../",subdir,"/",file));
+
+  if (chown(file,uid,gid) == -1)
+    logmsg(WHO,111,FATAL,B("unable to chown .../",subdir,"/",file));
+  if (chmod(file,mode) == -1)
+    logmsg(WHO,111,FATAL,B("unable to chmod .../",subdir,"/",file));
+}
+
+void z(char *home,char *file,int len,int uid,int gid,int mode)
+{
+  int fdout;
+
+  if (chdir(home) == -1)
+    logmsg(WHO,110,FATAL,B("unable to switch to: ",home));
+
+  fdout = open_trunc(file);
+  if (fdout == -1)
+    logmsg(WHO,111,FATAL,B("unable to write: ",home,"/",file));
+  buffer_init(&bo,write,fdout,outbuf,sizeof(outbuf));
+
+  while (len-- > 0)
+    if (buffer_put(&bo,"",1) == -1)
+      logmsg(WHO,111,FATAL,B("unable to write: ",home,"/",file));
+
+  if (buffer_flush(&bo) == -1)
+    logmsg(WHO,111,FATAL,B("unable to write: ",home,"/",file));
+  if (fsync(fdout) == -1)
+    logmsg(WHO,111,FATAL,B("unable to write: ",home,"/",file));
+  if (close(fdout) == -1) /* NFS silliness */
+    logmsg(WHO,111,FATAL,B("unable to write: ",home,"/",file));
+
+  if (chown(file,uid,gid) == -1)
+    logmsg(WHO,111,FATAL,B("unable to chown: ",home,"/",file));
+  if (chmod(file,mode) == -1)
+    logmsg(WHO,111,FATAL,B("unable to chmod: ",home,"/",file));
+}
+
+int main()
+{
+  fdsourcedir = open_read(".");
+  if (fdsourcedir == -1)
+    logmsg(WHO,110,FATAL,"unable to open current directory: ");
+
+  umask(077);
+  hier();
+  _exit(0);
+}
-- 
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