From 4f49b16079b27d7ce633619e4cddfdf2bffbc952 Mon Sep 17 00:00:00 2001
From: cashmere <cashmere@autistici.org>
Date: Fri, 4 Sep 2026 09:05:24 +0200
Subject: initial commit

---
 src/configure.c | 1157 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 1157 insertions(+)
 create mode 100644 src/configure.c

(limited to 'src/configure.c')

diff --git a/src/configure.c b/src/configure.c
new file mode 100644
index 0000000..353ebd6
--- /dev/null
+++ b/src/configure.c
@@ -0,0 +1,1157 @@
+/*
+** Copyright (c) 2008 D. Richard Hipp
+**
+** This program is free software; you can redistribute it and/or
+** modify it under the terms of the Simplified BSD License (also
+** known as the "2-Clause License" or "FreeBSD License".)
+**
+** This program 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.
+**
+** Author contact information:
+**   drh@hwaci.com
+**   http://www.hwaci.com/drh/
+**
+*******************************************************************************
+**
+** This file contains code used to manage repository configurations.
+**
+** By "repository configure" we mean the local state of a repository
+** distinct from the versioned files.
+*/
+#include "config.h"
+#include "configure.h"
+#include <assert.h>
+
+#if INTERFACE
+/*
+** Configuration transfers occur in groups.  These are the allowed
+** groupings:
+*/
+#define CONFIGSET_CSS       0x000001     /* Style sheet only */
+#define CONFIGSET_SKIN      0x000002     /* WWW interface appearance */
+#define CONFIGSET_TKT       0x000004     /* Ticket configuration */
+#define CONFIGSET_PROJ      0x000008     /* Project name */
+#define CONFIGSET_SHUN      0x000010     /* Shun settings */
+#define CONFIGSET_USER      0x000020     /* The USER table */
+#define CONFIGSET_ADDR      0x000040     /* The CONCEALED table */
+#define CONFIGSET_XFER      0x000080     /* Transfer configuration */
+#define CONFIGSET_ALIAS     0x000100     /* URL Aliases */
+#define CONFIGSET_SCRIBER   0x000200     /* Email subscribers */
+#define CONFIGSET_IWIKI     0x000400     /* Interwiki codes */
+#define CONFIGSET_ALL       0x0007ff     /* Everything */
+
+#define CONFIGSET_OVERWRITE 0x100000     /* Causes overwrite instead of merge */
+
+/*
+** This mask is used for the common TH1 configuration settings (i.e. those
+** that are not specific to one particular subsystem, such as the transfer
+** subsystem).
+*/
+#define CONFIGSET_TH1       (CONFIGSET_SKIN|CONFIGSET_TKT|CONFIGSET_XFER)
+
+#endif /* INTERFACE */
+
+/*
+** Names of the configuration sets
+*/
+static struct {
+  const char *zName;   /* Name of the configuration set */
+  int groupMask;       /* Mask for that configuration set */
+  const char *zHelp;   /* What it does */
+} aGroupName[] = {
+  { "/email",       CONFIGSET_ADDR,    "Concealed email addresses in tickets" },
+  { "/project",     CONFIGSET_PROJ,    "Project name and description"         },
+  { "/skin",        CONFIGSET_SKIN | CONFIGSET_CSS,
+                                       "Web interface appearance settings"    },
+  { "/css",         CONFIGSET_CSS,     "Style sheet"                          },
+  { "/shun",        CONFIGSET_SHUN,    "List of shunned artifacts"            },
+  { "/ticket",      CONFIGSET_TKT,     "Ticket setup",                        },
+  { "/user",        CONFIGSET_USER,    "Users and privilege settings"         },
+  { "/xfer",        CONFIGSET_XFER,    "Transfer setup",                      },
+  { "/alias",       CONFIGSET_ALIAS,   "URL Aliases",                         },
+  { "/subscriber",  CONFIGSET_SCRIBER, "Email notification subscriber list"   },
+  { "/interwiki",   CONFIGSET_IWIKI,   "Inter-wiki link prefixes"             },
+  { "/all",         CONFIGSET_ALL,     "All of the above"                     },
+};
+
+
+/*
+** The following is a list of settings that we are willing to
+** transfer.
+**
+** Setting names that begin with an alphabetic characters refer to
+** single entries in the CONFIG table.  Setting names that begin with
+** "@" are for special processing.
+*/
+static struct {
+  const char *zName;   /* Name of the configuration parameter */
+  int groupMask;       /* Which config groups is it part of */
+} aConfig[] = {
+  { "css",                    CONFIGSET_CSS  },
+  { "header",                 CONFIGSET_SKIN },
+  { "mainmenu",               CONFIGSET_SKIN },
+  { "footer",                 CONFIGSET_SKIN },
+  { "details",                CONFIGSET_SKIN },
+  { "js",                     CONFIGSET_SKIN },
+  { "default-skin",           CONFIGSET_SKIN },
+  { "logo-mimetype",          CONFIGSET_SKIN },
+  { "logo-image",             CONFIGSET_SKIN },
+  { "background-mimetype",    CONFIGSET_SKIN },
+  { "background-image",       CONFIGSET_SKIN },
+  { "icon-mimetype",          CONFIGSET_SKIN },
+  { "icon-image",             CONFIGSET_SKIN },
+  { "timeline-date-format",   CONFIGSET_SKIN },
+  { "timeline-default-style", CONFIGSET_SKIN },
+  { "timeline-dwelltime",     CONFIGSET_SKIN },
+  { "timeline-closetime",     CONFIGSET_SKIN },
+  { "timeline-hard-newlines", CONFIGSET_SKIN },
+  { "timeline-max-comment",   CONFIGSET_SKIN },
+  { "timeline-plaintext",     CONFIGSET_SKIN },
+  { "timeline-truncate-at-blank", CONFIGSET_SKIN },
+  { "timeline-tslink-info",   CONFIGSET_SKIN },
+  { "timeline-utc",           CONFIGSET_SKIN },
+  { "adunit",                 CONFIGSET_SKIN },
+  { "adunit-omit-if-admin",   CONFIGSET_SKIN },
+  { "adunit-omit-if-user",    CONFIGSET_SKIN },
+  { "default-csp",            CONFIGSET_SKIN },
+  { "sitemap-extra",          CONFIGSET_SKIN },
+  { "safe-html",              CONFIGSET_SKIN },
+
+#ifdef FOSSIL_ENABLE_TH1_HOOKS
+  { "th1-hooks",              CONFIGSET_TH1 },
+#endif
+  { "th1-uri-regexp",         CONFIGSET_TH1 },
+
+  { "project-name",           CONFIGSET_PROJ },
+  { "short-project-name",     CONFIGSET_PROJ },
+  { "project-description",    CONFIGSET_PROJ },
+  { "index-page",             CONFIGSET_PROJ },
+  { "manifest",               CONFIGSET_PROJ },
+  { "binary-glob",            CONFIGSET_PROJ },
+  { "clean-glob",             CONFIGSET_PROJ },
+  { "ignore-glob",            CONFIGSET_PROJ },
+  { "keep-glob",              CONFIGSET_PROJ },
+  { "crlf-glob",              CONFIGSET_PROJ },
+  { "crnl-glob",              CONFIGSET_PROJ },
+  { "encoding-glob",          CONFIGSET_PROJ },
+  { "empty-dirs",             CONFIGSET_PROJ },
+  { "dotfiles",               CONFIGSET_PROJ },
+  { "parent-project-code",    CONFIGSET_PROJ },
+  { "parent-project-name",    CONFIGSET_PROJ },
+  { "hash-policy",            CONFIGSET_PROJ },
+  { "comment-format",         CONFIGSET_PROJ },
+  { "mimetypes",              CONFIGSET_PROJ },
+  { "forbid-delta-manifests", CONFIGSET_PROJ },
+  { "mv-rm-files",            CONFIGSET_PROJ },
+  { "forum-statuses",         CONFIGSET_PROJ },
+  { "path-to-tag",            CONFIGSET_PROJ },
+  { "ticket-table",           CONFIGSET_TKT  },
+  { "ticket-common",          CONFIGSET_TKT  },
+  { "ticket-change",          CONFIGSET_TKT  },
+  { "ticket-newpage",         CONFIGSET_TKT  },
+  { "ticket-viewpage",        CONFIGSET_TKT  },
+  { "ticket-editpage",        CONFIGSET_TKT  },
+  { "ticket-reportlist",      CONFIGSET_TKT  },
+  { "ticket-report-template", CONFIGSET_TKT  },
+  { "ticket-key-template",    CONFIGSET_TKT  },
+  { "ticket-title-expr",      CONFIGSET_TKT  },
+  { "ticket-closed-expr",     CONFIGSET_TKT  },
+  { "@reportfmt",             CONFIGSET_TKT  },
+
+  { "@user",                  CONFIGSET_USER },
+  { "user-color-map",         CONFIGSET_USER },
+
+  { "@concealed",             CONFIGSET_ADDR },
+
+  { "@shun",                  CONFIGSET_SHUN },
+
+  { "@alias",                 CONFIGSET_ALIAS },
+
+  { "@subscriber",            CONFIGSET_SCRIBER },
+
+  { "@interwiki",             CONFIGSET_IWIKI },
+
+  { "xfer-common-script",     CONFIGSET_XFER },
+  { "xfer-push-script",       CONFIGSET_XFER },
+  { "xfer-commit-script",     CONFIGSET_XFER },
+  { "xfer-ticket-script",     CONFIGSET_XFER },
+
+};
+static int iConfig = 0;
+
+/*
+** Return name of first configuration property matching the given mask.
+*/
+const char *configure_first_name(int iMask){
+  iConfig = 0;
+  return configure_next_name(iMask);
+}
+const char *configure_next_name(int iMask){
+  if( iConfig==0 && (iMask & CONFIGSET_ALL)==CONFIGSET_ALL ){
+    iConfig = count(aGroupName);
+    return "/all";
+  }
+  while( iConfig<count(aGroupName)-1 ){
+    if( aGroupName[iConfig].groupMask & iMask ){
+      return aGroupName[iConfig++].zName;
+    }else{
+      iConfig++;
+    }
+  }
+  return 0;
+}
+
+/*
+** Return a pointer to a string that contains the RHS of an IN operator
+** that will select CONFIG table names that are part of the configuration
+** that matches iMatch.
+*/
+const char *configure_inop_rhs(int iMask){
+  Blob x;
+  int i;
+  const char *zSep = "";
+
+  blob_zero(&x);
+  blob_append_sql(&x, "(");
+  for(i=0; i<count(aConfig); i++){
+    if( (aConfig[i].groupMask & iMask)==0 ) continue;
+    if( aConfig[i].zName[0]=='@' ) continue;
+    blob_append_sql(&x, "%s'%q'", zSep/*safe-for-%s*/, aConfig[i].zName);
+    zSep = ",";
+  }
+  blob_append_sql(&x, ")");
+  return blob_sql_text(&x);
+}
+
+/*
+** Return the mask for the named configuration parameter if it can be
+** safely exported.  Return 0 if the parameter is not safe to export.
+**
+** "Safe" in the previous paragraph means the permission is granted to
+** export the property.  In other words, the requesting side has presented
+** login credentials and has sufficient capabilities to access the requested
+** information.
+**
+** Settings which are specifically flagged as sensitive will (as of
+** 2024-10-15) cause this function to return 0, regardless of user
+** permissions. As an example, if the th1-setup setting were not
+** sensitive then a malicious repo admin could set that to include
+** arbitrary TCL code and affect users who configure fossil with the
+** --with-tcl flag.
+*/
+int configure_is_exportable(const char *zName){
+  int i;
+  int n = strlen(zName);
+  Setting *pSet;
+  if( n>2 && zName[0]=='\'' && zName[n-1]=='\'' ){
+    char * zCpy;
+    zName++;
+    n -= 2;
+    zCpy = fossil_strndup(zName, (ssize_t)n);
+    pSet = db_find_setting(zCpy, 0);
+    fossil_free(zCpy);
+  }else{
+    pSet = db_find_setting(zName, 0);
+  }
+  if( pSet && pSet->sensitive ){
+    /* https://fossil-scm.org/forum/forumpost/6179500deadf6ec7 */
+    return 0;
+  }
+  for(i=0; i<count(aConfig); i++){
+    if( strncmp(zName, aConfig[i].zName, n)==0 && aConfig[i].zName[n]==0 ){
+      int m = aConfig[i].groupMask;
+      if( !g.perm.Admin ){
+        m &= ~(CONFIGSET_USER|CONFIGSET_SCRIBER);
+      }
+      if( !g.perm.RdAddr ){
+        m &= ~CONFIGSET_ADDR;
+      }
+      return m;
+    }
+  }
+  if( strncmp(zName, "walias:/", 8)==0 ){
+    return CONFIGSET_ALIAS;
+  }
+  if( strncmp(zName, "interwiki:", 10)==0 ){
+    return CONFIGSET_IWIKI;
+  }
+  return 0;
+}
+
+/*
+** A mask of all configuration tables that have been reset already.
+*/
+static int configHasBeenReset = 0;
+
+/*
+** Mask of modified configuration sets
+*/
+static int rebuildMask = 0;
+
+/*
+** Rebuild auxiliary tables as required by configuration changes.
+*/
+void configure_rebuild(void){
+  if( rebuildMask & CONFIGSET_TKT ){
+    ticket_rebuild();
+  }
+  rebuildMask = 0;
+}
+
+/*
+** Return true if z[] is not a "safe" SQL token.  A safe token is one of:
+**
+**   *   A string literal
+**   *   A blob literal
+**   *   An integer literal  (no floating point)
+**   *   NULL
+*/
+static int safeSql(const char *z){
+  int i;
+  if( z==0 || z[0]==0 ) return 0;
+  if( (z[0]=='x' || z[0]=='X') && z[1]=='\'' ) z++;
+  if( z[0]=='\'' ){
+    for(i=1; z[i]; i++){
+      if( z[i]=='\'' ){
+        i++;
+        if( z[i]=='\'' ){ continue; }
+        return z[i]==0;
+      }
+    }
+    return 0;
+  }else{
+    char c;
+    for(i=0; (c = z[i])!=0; i++){
+      if( !fossil_isalnum(c) ) return 0;
+    }
+  }
+  return 1;
+}
+
+/*
+** Return true if z[] consists of nothing but digits
+*/
+static int safeInt(const char *z){
+  int i;
+  if( z==0 || z[0]==0 ) return 0;
+  for(i=0; fossil_isdigit(z[i]); i++){}
+  return z[i]==0;
+}
+
+/*
+** Process a single "config" card received from the other side of a
+** sync session.
+**
+** Mask consists of one or more CONFIGSET_* values ORed together, to
+** designate what types of configuration we are allowed to receive.
+**
+** NEW FORMAT:
+**
+** zName is one of:
+**
+**     "/config", "/user",  "/shun", "/reportfmt", "/concealed",
+**     "/subscriber",
+**
+** zName indicates the table that holds the configuration information being
+** transferred.  pContent is a string that consist of alternating Fossil
+** and SQL tokens.  The First token is a timestamp in seconds since 1970.
+** The second token is a primary key for the table identified by zName.  If
+** The entry with the corresponding primary key exists and has a more recent
+** mtime, then nothing happens.  If the entry does not exist or if it has
+** an older mtime, then the content described by subsequent token pairs is
+** inserted.  The first element of each token pair is a column name and
+** the second is its value.
+**
+** In overview, we have:
+**
+**    NAME        CONTENT
+**    -------     -----------------------------------------------------------
+**    /config     $MTIME $NAME value $VALUE
+**    /user       $MTIME $LOGIN pw $VALUE cap $VALUE info $VALUE photo $VALUE
+**    /shun       $MTIME $UUID scom $VALUE
+**    /reportfmt  $MTIME $TITLE owner $VALUE cols $VALUE sqlcode $VALUE jx $JSON
+**    /concealed  $MTIME $HASH content $VALUE
+**    /subscriber $SMTIME $SEMAIL suname $V ...
+**
+** NAME-specific notes:
+**
+**  - /reportftm's $MTIME is in Julian, not the Unix epoch.
+*/
+void configure_receive(const char *zName, Blob *pContent, int groupMask){
+  int checkMask;   /* Masks for which we must first check existence of tables */
+
+  checkMask = CONFIGSET_SCRIBER;
+  if( zName[0]=='/' ){
+    /* The new format */
+    char *azToken[24];
+    int nToken = 0;
+    int ii, jj;
+    int thisMask;
+    Blob name, value, sql;
+    static const struct receiveType {
+      const char *zName;         /* Configuration key for this table */
+      const char *zPrimKey;      /* Primary key column */
+      int nField;                /* Number of data fields */
+      const char *azField[6];    /* Names of the data fields */
+    } aType[] = {
+      { "/config",    "name",  1, { "value", 0,0,0,0,0 }              },
+      { "@user",      "login", 5, { "pw","cap","info","photo","jx",0} },
+      { "@shun",      "uuid",  1, { "scom", 0,0,0,0,0}                },
+      { "@reportfmt", "title", 4, { "owner","cols","sqlcode","jx",0,0}},
+      { "@concealed", "hash",  1, { "content", 0,0,0,0,0 }            },
+      { "@subscriber","semail",6,
+          { "suname","sdigest","sdonotcall","ssub","sctime","smip"}   },
+    };
+
+    /* Locate the receiveType in aType[ii] */
+    for(ii=0; ii<count(aType); ii++){
+      if( fossil_strcmp(&aType[ii].zName[1],&zName[1])==0 ) break;
+    }
+    if( ii>=count(aType) ) return;
+
+    while( blob_token(pContent, &name) && blob_sqltoken(pContent, &value) ){
+      char *z = blob_terminate(&name);
+      if( !safeSql(z) ) return;
+      if( nToken>0 ){
+        for(jj=0; jj<aType[ii].nField; jj++){
+          if( fossil_strcmp(aType[ii].azField[jj], z)==0 ) break;
+        }
+        if( jj>=aType[ii].nField ) continue;
+      }else{
+        if( !safeInt(z) ) return;
+      }
+      azToken[nToken++] = z;
+      azToken[nToken++] = z = blob_terminate(&value);
+      if( !safeSql(z) ) return;
+      if( nToken>=count(azToken)-1 ) break;
+    }
+    if( nToken<2 ) return;
+    if( aType[ii].zName[0]=='/' ){
+      thisMask = configure_is_exportable(azToken[1]);
+      if( 0==thisMask ){
+        fossil_warning("Skipping non-exportable setting: %s = %s",
+                       azToken[1], nToken>3 ? azToken[3] : "?");
+        /* Will be skipped below */
+      }
+    }else{
+      thisMask = configure_is_exportable(aType[ii].zName);
+    }
+    if( (thisMask & groupMask)==0 ) return;
+    if( (thisMask & checkMask)!=0 ){
+      if( (thisMask & CONFIGSET_SCRIBER)!=0 ){
+        alert_schema(1);
+      }
+      checkMask &= ~thisMask;
+    }
+
+    blob_zero(&sql);
+    if( groupMask & CONFIGSET_OVERWRITE ){
+      if( (thisMask & configHasBeenReset)==0 && aType[ii].zName[0]!='/' ){
+        db_multi_exec("DELETE FROM \"%w\"", &aType[ii].zName[1]);
+        configHasBeenReset |= thisMask;
+      }
+      blob_append_sql(&sql, "REPLACE INTO ");
+    }else{
+      blob_append_sql(&sql, "INSERT OR IGNORE INTO ");
+    }
+    blob_append_sql(&sql, "\"%w\"(\"%w\",mtime",
+         &zName[1], aType[ii].zPrimKey);
+    if( fossil_stricmp(zName,"/subscriber")==0 ) alert_schema(0);
+    for(jj=2; jj<nToken; jj+=2){
+       blob_append_sql(&sql, ",\"%w\"", azToken[jj]);
+    }
+    blob_append_sql(&sql,") VALUES(%s,%s",
+       azToken[1] /*safe-for-%s*/, azToken[0]/*safe-for-%s*/);
+    for(jj=2; jj<nToken; jj+=2){
+       blob_append_sql(&sql, ",%s", azToken[jj+1] /*safe-for-%s*/);
+    }
+    db_protect_only(PROTECT_SENSITIVE);
+
+    /* Make sure tables have the "jx" column */
+    if( strcmp(&zName[1],"user")==0 ){
+      user_update_user_table();
+    }else if( strcmp(&zName[1],"reportfmt")==0 ){
+      report_update_reportfmt_table();
+    }
+
+    db_multi_exec("%s)", blob_sql_text(&sql));
+
+    if( db_changes()==0 ){
+      blob_reset(&sql);
+      blob_append_sql(&sql, "UPDATE \"%w\" SET mtime=%s",
+                      &zName[1], azToken[0]/*safe-for-%s*/);
+      for(jj=2; jj<nToken; jj+=2){
+        blob_append_sql(&sql, ", \"%w\"=%s",
+                        azToken[jj], azToken[jj+1]/*safe-for-%s*/);
+      }
+      blob_append_sql(&sql, " WHERE \"%w\"=%s AND mtime<%s",
+                   aType[ii].zPrimKey, azToken[1]/*safe-for-%s*/,
+                   azToken[0]/*safe-for-%s*/);
+      db_multi_exec("%s", blob_sql_text(&sql));
+    }
+    db_protect_pop();
+    blob_reset(&sql);
+    rebuildMask |= thisMask;
+  }
+}
+
+/*
+** Process a file full of "config" cards.
+*/
+void configure_receive_all(Blob *pIn, int groupMask){
+  Blob line;
+  int nToken;
+  int size;
+  Blob aToken[4];
+
+  configHasBeenReset = 0;
+  while( blob_line(pIn, &line) ){
+    if( blob_buffer(&line)[0]=='#' ) continue;
+    nToken = blob_tokenize(&line, aToken, count(aToken));
+    if( blob_eq(&aToken[0],"config")
+     && nToken==3
+     && blob_is_int(&aToken[2], &size)
+    ){
+      const char *zName = blob_str(&aToken[1]);
+      Blob content;
+      blob_zero(&content);
+      blob_extract(pIn, size, &content);
+      g.perm.Admin = g.perm.RdAddr = 1;
+      configure_receive(zName, &content, groupMask);
+      blob_reset(&content);
+      blob_seek(pIn, 1, BLOB_SEEK_CUR);
+    }
+  }
+}
+
+
+/*
+** Send "config" cards using the new format for all elements of a group
+** that have recently changed.
+**
+** Output goes into pOut.  The groupMask identifies the group(s) to be sent.
+** Send only entries whose timestamp is later than or equal to iStart.
+**
+** Return the number of cards sent.
+*/
+int configure_send_group(
+  Blob *pOut,              /* Write output here */
+  int groupMask,           /* Mask of groups to be send */
+  sqlite3_int64 iStart     /* Only write values changed since this time */
+){
+  Stmt q;
+  Blob rec;
+  int ii;
+  int nCard = 0;
+
+  blob_zero(&rec);
+  if( groupMask & CONFIGSET_SHUN ){
+    db_prepare(&q, "SELECT mtime, quote(uuid), quote(scom) FROM shun"
+                   " WHERE mtime>=%lld", iStart);
+    while( db_step(&q)==SQLITE_ROW ){
+      blob_appendf(&rec,"%s %s scom %s",
+        db_column_text(&q, 0),
+        db_column_text(&q, 1),
+        db_column_text(&q, 2)
+      );
+      blob_appendf(pOut, "config /shun %d\n%s\n",
+                   blob_size(&rec), blob_str(&rec));
+      nCard++;
+      blob_reset(&rec);
+    }
+    db_finalize(&q);
+  }
+  if( groupMask & CONFIGSET_USER ){
+    if( db_table_has_column("repository","user","jx") ){
+      db_prepare(&q, "SELECT mtime, quote(login), quote(pw), quote(cap),"
+                     "       quote(info), quote(photo), quote(jx) FROM user"
+                     " WHERE mtime>=%lld", iStart);
+    }else{
+      db_prepare(&q, "SELECT mtime, quote(login), quote(pw), quote(cap),"
+                     "       quote(info), quote(photo), 'NULL' FROM user"
+                     " WHERE mtime>=%lld", iStart);
+    }
+    while( db_step(&q)==SQLITE_ROW ){
+      const char *z;
+      blob_appendf(&rec,"%s %s", db_column_text(&q,0), db_column_text(&q,1));
+      z = db_column_text(&q,2);
+      if( strcmp(z,"NULL")!=0 ) blob_appendf(&rec," pw %s", z);
+      z = db_column_text(&q,3);
+      if( strcmp(z,"NULL")!=0 ) blob_appendf(&rec," cap %s", z);
+      z = db_column_text(&q,4);
+      if( strcmp(z,"NULL")!=0 ) blob_appendf(&rec," info %s", z);
+      z = db_column_text(&q,5);
+      if( strcmp(z,"NULL")!=0 ) blob_appendf(&rec," photo %s", z);
+      z = db_column_text(&q,6);
+      if( strcmp(z,"NULL")!=0 ) blob_appendf(&rec," jx %s", z);
+      blob_appendf(pOut, "config /user %d\n%s\n",
+                   blob_size(&rec), blob_str(&rec));
+      nCard++;
+      blob_reset(&rec);
+    }
+    db_finalize(&q);
+  }
+  if( groupMask & CONFIGSET_TKT ){
+    if( db_table_has_column("repository","reportfmt","jx") ){
+      db_prepare(&q, "SELECT mtime, quote(title), quote(owner), quote(cols),"
+                     "       quote(sqlcode), quote(jx) FROM reportfmt"
+                     " WHERE mtime>=%lld", iStart);
+    }else{
+      db_prepare(&q, "SELECT mtime, quote(title), quote(owner), quote(cols),"
+                     "       quote(sqlcode), 'NULL' FROM reportfmt"
+                     " WHERE mtime>=%lld", iStart);
+    }
+    while( db_step(&q)==SQLITE_ROW ){
+      const char *z;
+      blob_appendf(&rec,"%s %s", db_column_text(&q,0), db_column_text(&q,1));
+      z = db_column_text(&q,2);
+      if( strcmp(z,"NULL")!=0 ) blob_appendf(&rec," owner %s", z);
+      z = db_column_text(&q,3);
+      if( strcmp(z,"NULL")!=0 ) blob_appendf(&rec," cols %s", z);
+      z = db_column_text(&q,4);
+      if( strcmp(z,"NULL")!=0 ) blob_appendf(&rec," sqlcode %s", z);
+      z = db_column_text(&q,5);
+      if( strcmp(z,"NULL")!=0 ) blob_appendf(&rec," jx %s", z);
+      blob_appendf(pOut, "config /reportfmt %d\n%s\n",
+                   blob_size(&rec), blob_str(&rec));
+      nCard++;
+      blob_reset(&rec);
+    }
+    db_finalize(&q);
+  }
+  if( groupMask & CONFIGSET_ADDR ){
+    db_prepare(&q, "SELECT mtime, quote(hash), quote(content) FROM concealed"
+                   " WHERE mtime>=%lld", iStart);
+    while( db_step(&q)==SQLITE_ROW ){
+      blob_appendf(&rec,"%s %s content %s",
+        db_column_text(&q, 0),
+        db_column_text(&q, 1),
+        db_column_text(&q, 2)
+      );
+      blob_appendf(pOut, "config /concealed %d\n%s\n",
+                   blob_size(&rec), blob_str(&rec));
+      nCard++;
+      blob_reset(&rec);
+    }
+    db_finalize(&q);
+  }
+  if( groupMask & CONFIGSET_ALIAS ){
+    db_prepare(&q, "SELECT mtime, quote(name), quote(value) FROM config"
+                   " WHERE name GLOB 'walias:/*' AND mtime>=%lld", iStart);
+    while( db_step(&q)==SQLITE_ROW ){
+      blob_appendf(&rec,"%s %s value %s",
+        db_column_text(&q, 0),
+        db_column_text(&q, 1),
+        db_column_text(&q, 2)
+      );
+      blob_appendf(pOut, "config /config %d\n%s\n",
+                   blob_size(&rec), blob_str(&rec));
+      nCard++;
+      blob_reset(&rec);
+    }
+    db_finalize(&q);
+  }
+  if( groupMask & CONFIGSET_IWIKI ){
+    db_prepare(&q, "SELECT mtime, quote(name), quote(value) FROM config"
+                   " WHERE name GLOB 'interwiki:*' AND mtime>=%lld", iStart);
+    while( db_step(&q)==SQLITE_ROW ){
+      blob_appendf(&rec,"%s %s value %s",
+        db_column_text(&q, 0),
+        db_column_text(&q, 1),
+        db_column_text(&q, 2)
+      );
+      blob_appendf(pOut, "config /config %d\n%s\n",
+                   blob_size(&rec), blob_str(&rec));
+      nCard++;
+      blob_reset(&rec);
+    }
+    db_finalize(&q);
+  }
+  if( (groupMask & CONFIGSET_SCRIBER)!=0
+   && db_table_exists("repository","subscriber")
+  ){
+    db_prepare(&q, "SELECT mtime, quote(semail),"
+                   " quote(suname), quote(sdigest),"
+                   " quote(sdonotcall), quote(ssub),"
+                   " quote(sctime), quote(smip)"
+                   " FROM subscriber WHERE sverified"
+                   " AND mtime>=%lld", iStart);
+    while( db_step(&q)==SQLITE_ROW ){
+      blob_appendf(&rec,
+        "%lld %s suname %s sdigest %s sdonotcall %s ssub %s"
+        " sctime %s smip %s",
+        db_column_int64(&q, 0), /* mtime */
+        db_column_text(&q, 1),  /* semail (PK) */
+        db_column_text(&q, 2),  /* suname */
+        db_column_text(&q, 3),  /* sdigest */
+        db_column_text(&q, 4),  /* sdonotcall */
+        db_column_text(&q, 5),  /* ssub */
+        db_column_text(&q, 6),  /* sctime */
+        db_column_text(&q, 7)   /* smip */
+      );
+      blob_appendf(pOut, "config /subscriber %d\n%s\n",
+                   blob_size(&rec), blob_str(&rec));
+      nCard++;
+      blob_reset(&rec);
+    }
+    db_finalize(&q);
+  }
+  db_prepare(&q, "SELECT mtime, quote(name), quote(value) FROM config"
+                 " WHERE name=:name AND mtime>=%lld", iStart);
+  for(ii=0; ii<count(aConfig); ii++){
+    if( (aConfig[ii].groupMask & groupMask)!=0 && aConfig[ii].zName[0]!='@' ){
+      const Setting * pSet = db_find_setting(aConfig[ii].zName, 0);
+      if( pSet && pSet->sensitive ){
+        /* https://fossil-scm.org/forum/forumpost/6179500deadf6ec7 */
+        continue;
+      }
+      db_bind_text(&q, ":name", aConfig[ii].zName);
+      while( db_step(&q)==SQLITE_ROW ){
+        blob_appendf(&rec,"%s %s value %s",
+          db_column_text(&q, 0),
+          db_column_text(&q, 1),
+          db_column_text(&q, 2)
+        );
+        blob_appendf(pOut, "config /config %d\n%s\n",
+                     blob_size(&rec), blob_str(&rec));
+        nCard++;
+        blob_reset(&rec);
+      }
+      db_reset(&q);
+    }
+  }
+  db_finalize(&q);
+  return nCard;
+}
+
+/*
+** Identify a configuration group by name.  Return its mask.
+** Throw an error if no match.
+*/
+int configure_name_to_mask(const char *z, int notFoundIsFatal){
+  int i;
+  int n = strlen(z);
+  for(i=0; i<count(aGroupName); i++){
+    if( strncmp(z, &aGroupName[i].zName[1], n)==0 ){
+      return aGroupName[i].groupMask;
+    }
+  }
+  if( notFoundIsFatal ){
+    fossil_print("Available configuration areas:\n");
+    for(i=0; i<count(aGroupName); i++){
+      fossil_print("  %-13s %s\n",
+            &aGroupName[i].zName[1], aGroupName[i].zHelp);
+    }
+    fossil_fatal("no such configuration area: \"%s\"", z);
+  }
+  return 0;
+}
+
+/*
+** Write SQL text into file zFilename that will restore the configuration
+** area identified by mask to its current state from any other state.
+*/
+static void export_config(
+  int groupMask,            /* Mask indicating which configuration to export */
+  const char *zMask,        /* Name of the configuration */
+  sqlite3_int64 iStart,     /* Start date */
+  const char *zFilename     /* Write into this file */
+){
+  Blob out;
+  blob_zero(&out);
+  blob_appendf(&out,
+    "# The \"%s\" configuration exported from\n"
+    "# repository \"%s\"\n"
+    "# on %s\n",
+    zMask, g.zRepositoryName,
+    db_text(0, "SELECT datetime('now')")
+  );
+  configure_send_group(&out, groupMask, iStart);
+  blob_write_to_file(&out, zFilename);
+  blob_reset(&out);
+}
+
+
+/*
+** COMMAND: configuration*
+**
+** Usage: %fossil configuration METHOD ... ?OPTIONS?
+**
+** Where METHOD is one of: export import merge pull push reset.
+**
+** >  fossil configuration export AREA FILENAME
+**
+**         Write to FILENAME exported configuration information for AREA.
+**         AREA can be one of:
+**
+**             all email interwiki project shun skin
+**             ticket user alias subscriber
+**
+** >  fossil configuration import FILENAME
+**
+**         Read a configuration from FILENAME, overwriting the current
+**         configuration.
+**
+** >  fossil configuration merge FILENAME
+**
+**         Read a configuration from FILENAME and merge its values into
+**         the current configuration.  Existing values take priority over
+**         values read from FILENAME.
+**
+** >  fossil configuration pull AREA ?URL?
+**
+**         Pull and install the configuration from a different server
+**         identified by URL.  If no URL is specified, then the default
+**         server is used.  Use the --overwrite flag to completely
+**         replace local settings with content received from URL.
+**
+** >  fossil configuration push AREA ?URL?
+**
+**         Push the local configuration into the remote server identified
+**         by URL.  Admin privilege is required on the remote server for
+**         this to work.  When the same record exists both locally and on
+**         the remote end, the one that was most recently changed wins.
+**
+** >  fossil configuration reset AREA
+**
+**         Restore the configuration to the default.  AREA as above.
+**
+** >  fossil configuration sync AREA ?URL?
+**
+**         Synchronize configuration changes in the local repository with
+**         the remote repository at URL.
+**
+** Options:
+**    --proxy PROXY              Use PROXY as http proxy during sync operation
+**                               (used by pull, push and sync subcommands)
+**    -R|--repository REPO       Affect repository REPO with changes
+**
+** See also: [[settings]], [[unset]]
+*/
+void configuration_cmd(void){
+  int n;
+  const char *zMethod;
+  db_find_and_open_repository(0, 0);
+  db_open_config(0, 0);
+  if( g.argc<3 ){
+    usage("SUBCOMMAND ...");
+  }
+  zMethod = g.argv[2];
+  n = strlen(zMethod);
+  if( strncmp(zMethod, "export", n)==0 ){
+    int mask;
+    const char *zSince = find_option("since",0,1);
+    sqlite3_int64 iStart;
+    if( g.argc!=5 ){
+      usage("export AREA FILENAME");
+    }
+    mask = configure_name_to_mask(g.argv[3], 1);
+    if( zSince ){
+      iStart = db_multi_exec(
+         "SELECT coalesce(strftime('%%s',%Q),strftime('%%s','now',%Q))+0",
+         zSince, zSince
+      );
+    }else{
+      iStart = 0;
+    }
+    export_config(mask, g.argv[3], iStart, g.argv[4]);
+  }else
+  if( strncmp(zMethod, "import", n)==0
+       || strncmp(zMethod, "merge", n)==0 ){
+    Blob in;
+    int groupMask;
+    if( g.argc!=4 ) usage(mprintf("%s FILENAME",zMethod));
+    blob_read_from_file(&in, g.argv[3], ExtFILE);
+    db_begin_transaction();
+    if( zMethod[0]=='i' ){
+      groupMask = CONFIGSET_ALL | CONFIGSET_OVERWRITE;
+    }else{
+      groupMask = CONFIGSET_ALL;
+    }
+    db_unprotect(PROTECT_USER);
+    configure_receive_all(&in, groupMask);
+    db_protect_pop();
+    db_end_transaction(0);
+  }else
+  if( strncmp(zMethod, "pull", n)==0
+   || strncmp(zMethod, "push", n)==0
+   || strncmp(zMethod, "sync", n)==0
+  ){
+    int mask;
+    const char *zServer = 0;
+    int overwriteFlag = 0;
+
+    if( strncmp(zMethod,"pull",n)==0 ){
+      overwriteFlag = find_option("overwrite",0,0)!=0;
+    }
+    url_proxy_options();
+    if( g.argc!=4 && g.argc!=5 ){
+      usage(mprintf("%s AREA ?URL?", zMethod));
+    }
+    mask = configure_name_to_mask(g.argv[3], 1);
+    if( g.argc==5 ){
+      zServer = g.argv[4];
+    }
+    url_parse(zServer, URL_PROMPT_PW|URL_USE_CONFIG);
+    if( g.url.protocol==0 ) fossil_fatal("no server URL specified");
+    user_select();
+    url_enable_proxy("via proxy: ");
+    g.zHttpAuth = get_httpauth();
+    if( overwriteFlag ) mask |= CONFIGSET_OVERWRITE;
+    if( strncmp(zMethod, "push", n)==0 ){
+      client_sync(0,0,(unsigned)mask,0,0);
+    }else if( strncmp(zMethod, "pull", n)==0 ){
+      if( overwriteFlag ) db_unprotect(PROTECT_USER);
+      client_sync(0,(unsigned)mask,0,0,0);
+      if( overwriteFlag ) db_protect_pop();
+    }else{
+      client_sync(0,(unsigned)mask,(unsigned)mask,0,0);
+    }
+  }else
+  if( strncmp(zMethod, "reset", n)==0 ){
+    int mask, i;
+    char *zBackup;
+    if( g.argc!=4 ) usage("reset AREA");
+    mask = configure_name_to_mask(g.argv[3], 1);
+    zBackup = db_text(0,
+       "SELECT strftime('config-backup-%%Y%%m%%d%%H%%M%%f','now')");
+    db_begin_transaction();
+    export_config(mask, g.argv[3], 0, zBackup);
+    for(i=0; i<count(aConfig); i++){
+      const char *zName = aConfig[i].zName;
+      if( (aConfig[i].groupMask & mask)==0 ) continue;
+      if( zName[0]!='@' ){
+        db_unprotect(PROTECT_CONFIG);
+        db_multi_exec("DELETE FROM config WHERE name=%Q", zName);
+        db_protect_pop();
+      }else if( fossil_strcmp(zName,"@user")==0 ){
+        db_unprotect(PROTECT_USER);
+        db_multi_exec("DELETE FROM user");
+        db_protect_pop();
+        db_create_default_users(0, 0);
+      }else if( fossil_strcmp(zName,"@concealed")==0 ){
+        db_multi_exec("DELETE FROM concealed");
+      }else if( fossil_strcmp(zName,"@shun")==0 ){
+        db_multi_exec("DELETE FROM shun");
+      }else if( fossil_strcmp(zName,"@subscriber")==0 ){
+        if( db_table_exists("repository","subscriber") ){
+          db_multi_exec("DELETE FROM subscriber");
+        }
+      }else if( fossil_strcmp(zName,"@forum")==0 ){
+        if( db_table_exists("repository","forumpost") ){
+          db_multi_exec("DELETE FROM forumpost");
+          db_multi_exec("DELETE FROM forumthread");
+        }
+      }else if( fossil_strcmp(zName,"@reportfmt")==0 ){
+        db_multi_exec("DELETE FROM reportfmt");
+        assert( strchr(zRepositorySchemaDefaultReports,'%')==0 );
+        db_multi_exec(zRepositorySchemaDefaultReports /*works-like:""*/);
+      }
+    }
+    db_end_transaction(0);
+    fossil_print("Configuration reset to factory defaults.\n");
+    fossil_print("To recover, use:  %s %s import %s\n",
+            g.argv[0], g.argv[1], zBackup);
+    rebuildMask |= mask;
+  }else
+  {
+    fossil_fatal("METHOD should be one of:"
+                 " export import merge pull push reset");
+  }
+  configure_rebuild();
+}
+
+
+/*
+** COMMAND: test-var-list
+**
+** Usage: %fossil test-var-list ?PATTERN? ?--unset? ?--mtime?
+**
+** Show the content of the CONFIG table in a repository.  If PATTERN is
+** specified, then only show the entries that match that glob pattern.
+** Last modification time is shown if the --mtime option is present.
+**
+** If the --unset option is included, then entries are deleted rather than
+** being displayed.  WARNING! This cannot be undone.  Be sure you know what
+** you are doing!  The --unset option only works if there is a PATTERN.
+** Probably you should run the command once without --unset to make sure
+** you know exactly what is being deleted.
+**
+** If not in an open check-out, use the -R REPO option to specify a
+** a repository.
+*/
+void test_var_list_cmd(void){
+  Stmt q;
+  int i, j;
+  const char *zPattern = 0;
+  int doUnset;
+  int showMtime;
+  Blob sql;
+  Blob ans;
+  unsigned char zTrans[1000];
+
+  doUnset = find_option("unset",0,0)!=0;
+  showMtime = find_option("mtime",0,0)!=0;
+  db_find_and_open_repository(OPEN_ANY_SCHEMA, 0);
+  verify_all_options();
+  if( g.argc>=3 ){
+    zPattern = g.argv[2];
+  }
+  blob_init(&sql,0,0);
+  blob_appendf(&sql, "SELECT name, value, datetime(mtime,'unixepoch')"
+                     " FROM config");
+  if( zPattern ){
+    blob_appendf(&sql, " WHERE name GLOB %Q", zPattern);
+  }
+  if( showMtime ){
+    blob_appendf(&sql, " ORDER BY mtime, name");
+  }else{
+    blob_appendf(&sql, " ORDER BY name");
+  }
+  db_prepare(&q, "%s", blob_str(&sql)/*safe-for-%s*/);
+  blob_reset(&sql);
+#define MX_VAL 40
+#define MX_NM  28
+#define MX_LONGNM 60
+  while( db_step(&q)==SQLITE_ROW ){
+    const char *zName = db_column_text(&q,0);
+    int nName = db_column_bytes(&q,0);
+    const char *zValue = db_column_text(&q,1);
+    int szValue = db_column_bytes(&q,1);
+    const char *zMTime = db_column_text(&q,2);
+    for(i=j=0; j<MX_VAL && zValue[i]; i++){
+      unsigned char c = (unsigned char)zValue[i];
+      if( c>=' ' && c<='~' ){
+        zTrans[j++] = c;
+      }else{
+        zTrans[j++] = '\\';
+        if( c=='\n' ){
+          zTrans[j++] = 'n';
+        }else if( c=='\r' ){
+          zTrans[j++] = 'r';
+        }else if( c=='\t' ){
+          zTrans[j++] = 't';
+        }else{
+          zTrans[j++] = '0' + ((c>>6)&7);
+          zTrans[j++] = '0' + ((c>>3)&7);
+          zTrans[j++] = '0' + (c&7);
+        }
+      }
+    }
+    zTrans[j] = 0;
+    if( i<szValue ){
+      sqlite3_snprintf(sizeof(zTrans)-j, (char*)zTrans+j, "...+%d", szValue-i);
+      j += (int)strlen((char*)zTrans+j);
+    }
+    if( showMtime ){
+      fossil_print("%s:%*s%s\n", zName, 58-nName, "", zMTime);
+    }else if( nName<MX_NM-2 ){
+      fossil_print("%s:%*s%s\n", zName, MX_NM-1-nName, "", zTrans);
+    }else if( nName<MX_LONGNM-2 && j<10 ){
+      fossil_print("%s:%*s%s\n", zName, MX_LONGNM-1-nName, "", zTrans);
+    }else{
+      fossil_print("%s:\n%*s%s\n", zName, MX_NM, "", zTrans);
+    }
+  }
+  db_finalize(&q);
+  if( zPattern && doUnset ){
+    prompt_user("Delete all of the above? (y/N)? ", &ans);
+    if( blob_str(&ans)[0]=='y' || blob_str(&ans)[0]=='Y' ){
+      db_multi_exec("DELETE FROM config WHERE name GLOB %Q", zPattern);
+    }
+    blob_reset(&ans);
+  }
+}
+
+/*
+** COMMAND: test-var-get
+**
+** Usage: %fossil test-var-get VAR ?FILE?
+**
+** Write the text of the VAR variable into FILE.  If FILE is "-"
+** or is omitted then output goes to standard output.  VAR can be a
+** GLOB pattern.
+**
+** If not in an open check-out, use the -R REPO option to specify a
+** a repository.
+*/
+void test_var_get_cmd(void){
+  const char *zVar;
+  const char *zFile;
+  int n;
+  Blob x;
+  db_find_and_open_repository(OPEN_ANY_SCHEMA, 0);
+  verify_all_options();
+  if( g.argc<3 ){
+    usage("VAR ?FILE?");
+  }
+  zVar = g.argv[2];
+  zFile = g.argc>=4 ? g.argv[3] : "-";
+  n = db_int(0, "SELECT count(*) FROM config WHERE name GLOB %Q", zVar);
+  if( n==0 ){
+    fossil_fatal("no match for %Q", zVar);
+  }
+  if( n>1 ){
+    fossil_fatal("multiple matches: %s",
+      db_text(0, "SELECT group_concat(quote(name),', ') FROM ("
+                 " SELECT name FROM config WHERE name GLOB %Q ORDER BY 1)",
+                 zVar));
+  }
+  blob_init(&x,0,0);
+  db_blob(&x, "SELECT value FROM config WHERE name GLOB %Q", zVar);
+  blob_write_to_file(&x, zFile);
+}
+
+/*
+** COMMAND: test-var-set
+**
+** Usage: %fossil test-var-set VAR ?VALUE? ?--file FILE?
+**
+** Store VALUE or the content of FILE (exactly one of which must be
+** supplied) into variable VAR.  Use a FILE of "-" to read from
+** standard input.
+**
+** WARNING: changing the value of a variable can interfere with the
+** operation of Fossil.  Be sure you know what you are doing.
+**
+** Use "--blob FILE" instead of "--file FILE" to load a binary blob
+** such as a GIF.
+*/
+void test_var_set_cmd(void){
+  const char *zVar;
+  const char *zFile;
+  const char *zBlob;
+  Blob x;
+  Stmt ins;
+  zFile = find_option("file",0,1);
+  zBlob = find_option("blob",0,1);
+  db_find_and_open_repository(OPEN_ANY_SCHEMA, 0);
+  verify_all_options();
+  if( g.argc<3 || (zFile==0 && zBlob==0 && g.argc<4) ){
+    usage("VAR ?VALUE? ?--file FILE?");
+  }
+  zVar = g.argv[2];
+  if( zFile ){
+    if( zBlob ) fossil_fatal("cannot do both --file or --blob");
+    blob_read_from_file(&x, zFile, ExtFILE);
+  }else if( zBlob ){
+    blob_read_from_file(&x, zBlob, ExtFILE);
+  }else{
+    blob_init(&x,g.argv[3],-1);
+  }
+  db_unprotect(PROTECT_CONFIG);
+  db_prepare(&ins,
+     "REPLACE INTO config(name,value,mtime)"
+     "VALUES(%Q,:val,now())", zVar);
+  if( zBlob ){
+    db_bind_blob(&ins, ":val", &x);
+  }else{
+    db_bind_text(&ins, ":val", blob_str(&x));
+  }
+  db_step(&ins);
+  db_finalize(&ins);
+  db_protect_pop();
+  blob_reset(&x);
+}
-- 
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