bump version to 0.2.3

The libssh auth document suggets to call ssh_userauth_none() first to
obtain userauth list. However, it can lead PerSourcePenalties. Thus, try
pubkey auth first and try password and interactive auths next.

.dockerignore

@@ -0,0 +1 @@
+build

.github/workflows/build-freebsd.yml

@@ -15,13 +15,17 @@ jobs:
       with:
         submodules: true
 
+    - name: apply the patch to libssh
+      run: |
+        git -C libssh fetch --all --tags --prune
+        patch -d libssh -p1 < patch/$(git -C libssh describe).patch
+
     - name: Build in FreeBSD
       uses: vmactions/freebsd-vm@v1
       with:
         prepare: |
           pkg install -y git cmake
         run: |
-          patch -d libssh -p1 < patch/libssh-0.10.6-2-g6f1b1e76.patch
           cmake -B build -DCMAKE_BUILD_TYPE=Release
           cmake --build build
           build/mscp -h

.github/workflows/build-macos.yml

@@ -22,6 +22,11 @@ jobs:
       with:
         submodules: true
 
+    - name: apply the patch to libssh
+      run: |
+        git -C libssh fetch --all --tags --prune
+        patch -d libssh -p1 < patch/$(git -C libssh describe).patch
+
     - name: install build dependency
       run: ./scripts/install-build-deps.sh
 
@@ -29,9 +34,6 @@ jobs:
       id: brew-prefix
       run: echo "HOMEBREW_PREFIX=$(brew --prefix)" >> $GITHUB_OUTPUT
 
-    - name: patch to libssh
-      run: patch -d libssh -p1 < patch/libssh-0.10.6-2-g6f1b1e76.patch
-
     - name: Configure CMake
       # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.
       # See https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html?highlight=cmake_build_type

.github/workflows/build-ubuntu.yml

@@ -22,14 +22,16 @@ jobs:
       with:
         submodules: true
 
+    - name: apply the patch to libssh
+      run: |
+        git -C libssh fetch --all --tags --prune
+        patch -d libssh -p1 < patch/$(git -C libssh describe).patch
+
     - name: install build dependency
       run: |
         sudo apt-get update
         sudo ./scripts/install-build-deps.sh
 
-    - name: patch to libssh
-      run: patch -d libssh -p1 < patch/libssh-0.10.6-2-g6f1b1e76.patch
-
     - name: Configure CMake
       # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.
       # See https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html?highlight=cmake_build_type

.github/workflows/codeql.yml

@@ -42,14 +42,16 @@ jobs:
       with:
         submodules: true
 
+    - name: apply the patch to libssh
+      run: |
+        git -C libssh fetch --all --tags --prune
+        patch -d libssh -p1 < patch/$(git -C libssh describe).patch
+
     - name: install build dependency
       run: |
         sudo apt-get update
         sudo ./scripts/install-build-deps.sh
 
-    - name: patch to libssh
-      run: patch -d libssh -p1 < patch/libssh-0.10.6-2-g6f1b1e76.patch
-
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
       uses: github/codeql-action/init@v3

.github/workflows/release.yml

@@ -10,32 +10,6 @@ env:
     BUILD_TYPE: Release
 
 jobs:
-  build-and-release:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          submodules: true
-
-      - name: patch to libssh
-        run: patch -d libssh -p1 < patch/libssh-0.10.6-2-g6f1b1e76.patch
-
-      # TODO: just building docker does not require packages. fix CMakeLists
-      - name: install build dependency
-        run: sudo ./scripts/install-build-deps.sh
-
-      - name: Configure Cmake
-        run: cmake -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}}
-
-      - name: Build single binary mscp
-        run: make -C ${{github.workspace}}/build build-single-binary
-
-      - name: Release
-        uses: softprops/action-gh-release@v1
-        with:
-          files: |
-            ${{github.workspace}}/build/mscp.linux.x86_64.static
-
   source-release:
     runs-on: ubuntu-latest
     steps:
@@ -43,8 +17,10 @@ jobs:
         with:
           submodules: true
 
-      - name: patch to libssh
-        run: patch -d libssh -p1 < patch/libssh-0.10.6-2-g6f1b1e76.patch
+      - name: apply the patch to libssh
+        run: |
+          git -C libssh fetch --all --tags --prune
+          patch -d libssh -p1 < patch/$(git -C libssh describe).patch
 
       - name: Set variables
         run: |

.github/workflows/test.yml

@@ -22,15 +22,17 @@ jobs:
         - rocky-8.9
         - rocky-9.3
         - almalinux-9.3
-        - alpine-3.19
+        - alpine-3.22
         - arch-base
     steps:
     - uses: actions/checkout@v4
       with:
         submodules: true
 
-    - name: patch to libssh
-      run: patch -d libssh -p1 < patch/libssh-0.10.6-2-g6f1b1e76.patch
+    - name: apply the patch to libssh
+      run: |
+        git -C libssh fetch --all --tags --prune
+        patch -d libssh -p1 < patch/$(git -C libssh describe).patch
 
     # TODO: just building docker images does not require libssh. fix CMakeLists
     - name: install build dependency

CMakeLists.txt

@@ -168,7 +168,7 @@ enable_testing()
 #
 # When edit DIST_IDS and DIST_VERS, also edit .github/workflows/test.yaml
 list(APPEND DIST_IDS  ubuntu ubuntu ubuntu rocky rocky almalinux alpine arch)
-list(APPEND DIST_VERS  20.04  22.04  24.04   8.9   9.3       9.3   3.19 base)
+list(APPEND DIST_VERS  20.04  22.04  24.04   8.9   9.3       9.3   3.22 base)
 
 list(LENGTH DIST_IDS _DIST_LISTLEN)
 math(EXPR DIST_LISTLEN "${_DIST_LISTLEN} - 1")
@@ -208,6 +208,16 @@ foreach(x RANGE ${DIST_LISTLEN})
 		--add-host=ip6-localhost:::1
 		${DOCKER_IMAGE} /mscp/scripts/test-in-container.sh)
 
+	add_custom_target(docker-run-${DOCKER_INDEX}
+		COMMENT "Start ${DOCKER_IMAGE} container"
+		WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
+		COMMAND
+		${CE} run --init --rm --privileged
+		--sysctl net.ipv6.conf.all.disable_ipv6=0
+		--add-host=ip6-localhost:::1
+		-it
+		${DOCKER_IMAGE} /mscp/scripts/test-in-container.sh bash)
+
 	list(APPEND DOCKER_BUILDS		docker-build-${DOCKER_INDEX})
 	list(APPEND DOCKER_BUILDS_NO_CACHE	docker-build-${DOCKER_INDEX}-no-cache)
 	list(APPEND DOCKER_TESTS		docker-test-${DOCKER_INDEX})
@@ -278,9 +288,9 @@ add_custom_target(build-single-binary
 	COMMENT "Build mscp as a single binary in alpine conatiner"
 	WORKING_DIRECTORY ${mscp_SOURCE_DIR}
 	BYPRODUCTS ${CMAKE_BINARY_DIR}/${SINGLEBINARYFILE}
-	DEPENDS docker-build-alpine-3.19
+	DEPENDS docker-build-alpine-3.22
 	COMMAND
-	${CE} run --rm -v ${CMAKE_BINARY_DIR}:/out mscp-alpine:3.19
+	${CE} run --rm -v ${CMAKE_BINARY_DIR}:/out mscp-alpine:3.22
 	cp /mscp/build/mscp /out/${SINGLEBINARYFILE})
 
 

Dockerfile/alpine-3.22.Dockerfile

@@ -1,4 +1,4 @@
-FROM alpine:3.19
+FROM alpine:3.22
 
 # do not use REQUIREDPKGS build argument because
 # this Dockerfile compiles mscp with conan,so we do not need
@@ -19,6 +19,10 @@ RUN ssh-keygen -A \
 	&& ssh-keygen -f /root/.ssh/id_rsa -N ""                \
 	&& cat /root/.ssh/id_rsa.pub > /root/.ssh/authorized_keys
 
+# disable PerSourcePenaltie, which would distrub test:
+# https://undeadly.org/cgi?action=article;sid=20240607042157
+RUN echo "PerSourcePenalties=no" > /etc/ssh/sshd_config.d/90-mscp-test.conf
+
 # create test user
 RUN addgroup -S test \
 	&& adduser -S test -G test \

README.md

@@ -61,12 +61,6 @@ sudo dnf copr enable upaaa/mscp
 sudo dnf install mscp
 ```
 
-- Single binary `mscp` for x86_64 (not optimal performance)
-```console
-wget https://github.com/upa/mscp/releases/latest/download/mscp.linux.x86_64.static -O /usr/local/bin/mscp
-chmod 755 /usr/local/bin/mscp
-```
-
 
 ## Build
 
@@ -86,7 +80,7 @@ cd mscp
 
 # prepare patched libssh
 git submodule update --init
-patch -d libssh -p1 < patch/$(git --git-dir=./libssh/.git describe).patch
+patch -d libssh -p1 < patch/$(git -C libssh describe).patch
 
 # install build dependency
 bash ./scripts/install-build-deps.sh

VERSION

@@ -1 +1 @@
-0.2.2
+0.2.3

debian/changelog

@@ -1,4 +1,15 @@
-mscp (0.2.2) UNRELEASED; urgency=medium
+mscp (0.2.3) UNRELEASED; urgency=medium
+
+  * bump libssh version to 0.11.2 (#25)
+  * adopt new AIO read API of libssh
+  * fix path handling when remote dst path has suffix '/' (#24)
+  * fix remote path handling including '~' (partially)
+  * try pubkey auth first to avoid PerSourcePenalties
+  * remove the single-binary version of mscp from release
+
+ -- Ryo Nakamura <upa@haeena.net>  Tue, 12 Aug 2025 18:11:47 +0900
+
+mscp (0.2.2) unstable; urgency=medium
 
   * bump cmake_minimum_version on libssh (#32)
   * fix quiet mode (#30)

patch/README.md

@@ -1,5 +1,6 @@
 
-Patches in this directory introduces `sftp_async_write()` and
-`sftp_async_write_end()` to libssh. Those implementations are derived
-from https://github.com/limes-datentechnik-gmbh/libssh. See [Re: SFTP
-Write async](https://archive.libssh.org/libssh/2020-06/0000004.html).
+Patches in this directory introduce enhancements for libssh including
+`sftp_async_write()` and `sftp_async_write_end()`, derived from
+https://github.com/limes-datentechnik-gmbh/libssh. See [Re: SFTP Write
+async](https://archive.libssh.org/libssh/2020-06/0000004.html).
+

patch/libssh-0.11.2.patch

@@ -0,0 +1,605 @@
+diff --git a/ConfigureChecks.cmake b/ConfigureChecks.cmake
+index 8765dc6e..766e7d16 100644
+--- a/ConfigureChecks.cmake
++++ b/ConfigureChecks.cmake
+@@ -209,6 +209,7 @@ if (UNIX)
+     check_library_exists(util forkpty "" HAVE_LIBUTIL)
+     check_function_exists(cfmakeraw HAVE_CFMAKERAW)
+     check_function_exists(__strtoull HAVE___STRTOULL)
++    check_symbol_exists(TCP_CONGESTION "netinet/tcp.h" HAVE_TCP_CONGESTION)
+ endif (UNIX)
+ 
+ set(LIBSSH_REQUIRED_LIBRARIES ${_REQUIRED_LIBRARIES} CACHE INTERNAL "libssh required system libraries")
+diff --git a/config.h.cmake b/config.h.cmake
+index 8dce5273..ef534762 100644
+--- a/config.h.cmake
++++ b/config.h.cmake
+@@ -219,6 +219,8 @@
+ 
+ #cmakedefine HAVE_GCC_BOUNDED_ATTRIBUTE 1
+ 
++#cmakedefine HAVE_TCP_CONGESTION 1
++
+ /* Define to 1 if you want to enable GSSAPI */
+ #cmakedefine WITH_GSSAPI 1
+ 
+diff --git a/include/libssh/buffer.h b/include/libssh/buffer.h
+index d22178e7..2d6aa0a7 100644
+--- a/include/libssh/buffer.h
++++ b/include/libssh/buffer.h
+@@ -37,6 +37,8 @@ int ssh_buffer_add_u8(ssh_buffer buffer, uint8_t data);
+ int ssh_buffer_add_u16(ssh_buffer buffer, uint16_t data);
+ int ssh_buffer_add_u32(ssh_buffer buffer, uint32_t data);
+ int ssh_buffer_add_u64(ssh_buffer buffer, uint64_t data);
++ssize_t ssh_buffer_add_func(ssh_buffer buffer, ssh_add_func f, size_t max_bytes,
++			    void *userdata);
+ 
+ int ssh_buffer_validate_length(struct ssh_buffer_struct *buffer, size_t len);
+ 
+diff --git a/include/libssh/libssh.h b/include/libssh/libssh.h
+index 3bddb019..1d5d7761 100644
+--- a/include/libssh/libssh.h
++++ b/include/libssh/libssh.h
+@@ -373,6 +373,7 @@ enum ssh_options_e {
+     SSH_OPTIONS_HOST,
+     SSH_OPTIONS_PORT,
+     SSH_OPTIONS_PORT_STR,
++    SSH_OPTIONS_AI_FAMILY,
+     SSH_OPTIONS_FD,
+     SSH_OPTIONS_USER,
+     SSH_OPTIONS_SSH_DIR,
+@@ -407,6 +408,7 @@ enum ssh_options_e {
+     SSH_OPTIONS_GSSAPI_AUTH,
+     SSH_OPTIONS_GLOBAL_KNOWNHOSTS,
+     SSH_OPTIONS_NODELAY,
++    SSH_OPTIONS_CCALGO,
+     SSH_OPTIONS_PUBLICKEY_ACCEPTED_TYPES,
+     SSH_OPTIONS_PROCESS_CONFIG,
+     SSH_OPTIONS_REKEY_DATA,
+@@ -876,6 +878,7 @@ LIBSSH_API const char* ssh_get_hmac_in(ssh_session session);
+ LIBSSH_API const char* ssh_get_hmac_out(ssh_session session);
+ 
+ LIBSSH_API ssh_buffer ssh_buffer_new(void);
++LIBSSH_API ssh_buffer ssh_buffer_new_size(uint32_t size, uint32_t headroom);
+ LIBSSH_API void ssh_buffer_free(ssh_buffer buffer);
+ #define SSH_BUFFER_FREE(x) \
+     do { if ((x) != NULL) { ssh_buffer_free(x); x = NULL; } } while(0)
+@@ -886,6 +889,12 @@ LIBSSH_API void *ssh_buffer_get(ssh_buffer buffer);
+ LIBSSH_API uint32_t ssh_buffer_get_len(ssh_buffer buffer);
+ LIBSSH_API int ssh_session_set_disconnect_message(ssh_session session, const char *message);
+ 
++typedef ssize_t (*ssh_add_func) (void *ptr, size_t max_bytes, void *userdata);
++
++LIBSSH_API const char **ssh_ciphers(void);
++LIBSSH_API const char **ssh_hmacs(void);
++LIBSSH_API void ssh_use_openssh_proxy_jumps(int);
++
+ #ifndef LIBSSH_LEGACY_0_4
+ #include "libssh/legacy.h"
+ #endif
+diff --git a/include/libssh/session.h b/include/libssh/session.h
+index aed94072..327cf4fe 100644
+--- a/include/libssh/session.h
++++ b/include/libssh/session.h
+@@ -255,6 +255,7 @@ struct ssh_session_struct {
+         unsigned long timeout; /* seconds */
+         unsigned long timeout_usec;
+         uint16_t port;
++        int  ai_family;
+         socket_t fd;
+         int StrictHostKeyChecking;
+         char compressionlevel;
+@@ -264,6 +265,7 @@ struct ssh_session_struct {
+         int flags;
+         int exp_flags;
+         int nodelay;
++        char *ccalgo;
+         bool config_processed;
+         uint8_t options_seen[SOC_MAX];
+         uint64_t rekey_data;
+diff --git a/include/libssh/sftp.h b/include/libssh/sftp.h
+index cf4458c3..1a864795 100644
+--- a/include/libssh/sftp.h
++++ b/include/libssh/sftp.h
+@@ -569,6 +569,10 @@ SSH_DEPRECATED LIBSSH_API int sftp_async_read(sftp_file file,
+                                               uint32_t len,
+                                               uint32_t id);
+ 
++LIBSSH_API ssize_t sftp_async_write(sftp_file file, ssh_add_func f, size_t count,
++				    void *userdata, uint32_t* id);
++LIBSSH_API int sftp_async_write_end(sftp_file file, uint32_t id, int blocking);
++
+ /**
+  * @brief Write to a file using an opened sftp file handle.
+  *
+diff --git a/src/buffer.c b/src/buffer.c
+index 449fa941..f49e8af6 100644
+--- a/src/buffer.c
++++ b/src/buffer.c
+@@ -142,6 +142,40 @@ struct ssh_buffer_struct *ssh_buffer_new(void)
+     return buf;
+ }
+ 
++/**
++ * @brief Create a new SSH buffer with a specified size and headroom.
++ *
++ * @param[in] len       length for newly initialized SSH buffer.
++ * @param[in] headroom  length for headroom
++ * @return A newly initialized SSH buffer, NULL on error.
++ */
++struct ssh_buffer_struct *ssh_buffer_new_size(uint32_t len, uint32_t headroom)
++{
++    struct ssh_buffer_struct *buf = NULL;
++    int rc;
++
++    if (len < headroom)
++	    return NULL;
++
++    buf = calloc(1, sizeof(struct ssh_buffer_struct));
++    if (buf == NULL) {
++        return NULL;
++    }
++
++    rc = ssh_buffer_allocate_size(buf, len);
++    if (rc != 0) {
++        SAFE_FREE(buf);
++        return NULL;
++    }
++
++    buf->pos += headroom;
++    buf->used += headroom;
++
++    buffer_verify(buf);
++
++    return buf;
++}
++
+ /**
+  * @brief Deallocate a SSH buffer.
+  *
+@@ -329,6 +363,49 @@ int ssh_buffer_add_data(struct ssh_buffer_struct *buffer, const void *data, uint
+     return 0;
+ }
+ 
++/**
++ * @brief Add data at the tail of a buffer by an external function
++ *
++ * @param[in]  buffer    The buffer to add data.
++ *
++ * @param[in]  f         function that adds data to the buffer.
++ *
++ * @param[in]  max_bytes The maximum length of the data to add.
++ *
++ * @return               actual bytes added on success, < 0 on error.
++ */
++ssize_t ssh_buffer_add_func(struct ssh_buffer_struct *buffer, ssh_add_func f,
++			    size_t max_bytes, void *userdata)
++{
++    ssize_t actual;
++
++    if (buffer == NULL) {
++        return -1;
++    }
++
++    buffer_verify(buffer);
++
++    if (buffer->used + max_bytes < max_bytes) {
++        return -1;
++    }
++
++    if (buffer->allocated < (buffer->used + max_bytes)) {
++        if (buffer->pos > 0) {
++            buffer_shift(buffer);
++        }
++        if (realloc_buffer(buffer, buffer->used + max_bytes) < 0) {
++            return -1;
++        }
++    }
++
++    if ((actual = f(buffer->data + buffer->used, max_bytes, userdata)) < 0)
++      return -1;
++
++    buffer->used += actual;
++    buffer_verify(buffer);
++    return actual;
++}
++
+ /**
+  * @brief Ensure the buffer has at least a certain preallocated size.
+  *
+diff --git a/src/connect.c b/src/connect.c
+index 2cb64037..51f4c87e 100644
+--- a/src/connect.c
++++ b/src/connect.c
+@@ -109,7 +109,7 @@ static int ssh_connect_socket_close(socket_t s)
+ #endif
+ }
+ 
+-static int getai(const char *host, int port, struct addrinfo **ai)
++static int getai(const char *host, int port, int ai_family, struct addrinfo **ai)
+ {
+     const char *service = NULL;
+     struct addrinfo hints;
+@@ -118,7 +118,7 @@ static int getai(const char *host, int port, struct addrinfo **ai)
+     ZERO_STRUCT(hints);
+ 
+     hints.ai_protocol = IPPROTO_TCP;
+-    hints.ai_family = PF_UNSPEC;
++    hints.ai_family = ai_family > 0 ? ai_family : PF_UNSPEC;
+     hints.ai_socktype = SOCK_STREAM;
+ 
+     if (port == 0) {
+@@ -151,6 +151,20 @@ static int set_tcp_nodelay(socket_t socket)
+                       sizeof(opt));
+ }
+ 
++static int set_tcp_ccalgo(socket_t socket, const char *ccalgo)
++{
++#ifdef HAVE_TCP_CONGESTION
++	return setsockopt(socket,
++			  IPPROTO_TCP,
++			  TCP_CONGESTION,
++			  (void *)ccalgo,
++			  strlen(ccalgo));
++#else
++	errno = ENOTSUP;
++	return -1;
++#endif
++}
++
+ /**
+  * @internal
+  *
+@@ -168,7 +182,7 @@ socket_t ssh_connect_host_nonblocking(ssh_session session, const char *host,
+     struct addrinfo *ai = NULL;
+     struct addrinfo *itr = NULL;
+ 
+-    rc = getai(host, port, &ai);
++    rc = getai(host, port, session->opts.ai_family, &ai);
+     if (rc != 0) {
+         ssh_set_error(session, SSH_FATAL,
+                       "Failed to resolve hostname %s (%s)",
+@@ -194,7 +208,7 @@ socket_t ssh_connect_host_nonblocking(ssh_session session, const char *host,
+ 
+             SSH_LOG(SSH_LOG_PACKET, "Resolving %s", bind_addr);
+ 
+-            rc = getai(bind_addr, 0, &bind_ai);
++            rc = getai(bind_addr, 0, session->opts.ai_family, &bind_ai);
+             if (rc != 0) {
+                 ssh_set_error(session, SSH_FATAL,
+                               "Failed to resolve bind address %s (%s)",
+@@ -251,6 +265,18 @@ socket_t ssh_connect_host_nonblocking(ssh_session session, const char *host,
+             }
+         }
+ 
++        if (session->opts.ccalgo) {
++	     rc = set_tcp_ccalgo(s, session->opts.ccalgo);
++	     if (rc < 0) {
++		 ssh_set_error(session, SSH_FATAL,
++			       "Failed to set TCP_CONGESTION on socket: %s",
++			       ssh_strerror(errno, err_msg, SSH_ERRNO_MSG_MAX));
++		 ssh_connect_socket_close(s);
++		 s = -1;
++		 continue;
++	     }
++	}
++
+         errno = 0;
+         rc = connect(s, itr->ai_addr, itr->ai_addrlen);
+         if (rc == -1) {
+diff --git a/src/misc.c b/src/misc.c
+index 774211fb..74e57959 100644
+--- a/src/misc.c
++++ b/src/misc.c
+@@ -71,6 +71,8 @@
+ #include "libssh/priv.h"
+ #include "libssh/misc.h"
+ #include "libssh/session.h"
++#include "libssh/wrapper.h"
++#include "libssh/crypto.h"
+ 
+ #ifdef HAVE_LIBGCRYPT
+ #define GCRYPT_STRING "/gcrypt"
+@@ -2054,6 +2056,42 @@ ssize_t ssh_readn(int fd, void *buf, size_t nbytes)
+     return total_bytes_read;
+ }
+ 
++/**
++ * @brief Return supported cipher names
++ * @return	The list of cipher names.
++ */
++const char **ssh_ciphers(void)
++{
++     struct ssh_cipher_struct *tab=ssh_get_ciphertab();
++     static const char *ciphers[32];
++     int n;
++
++     memset(ciphers, 0, sizeof(*ciphers));
++
++     for (n = 0; tab[n].name != NULL; n++) {
++	  ciphers[n] = tab[n].name;
++     }
++     return ciphers;
++}
++
++/**
++ * @brief Return supported hmac names
++ * @return	The list of hmac names.
++ */
++const char **ssh_hmacs(void)
++{
++     struct ssh_hmac_struct *tab=ssh_get_hmactab();
++     static const char *hmacs[32];
++     int n;
++
++     memset(hmacs, 0, sizeof(*hmacs));
++
++     for (n = 0; tab[n].name != NULL; n++) {
++	  hmacs[n] = tab[n].name;
++     }
++     return hmacs;
++}
++
+ /**
+  * @brief Write the requested number of bytes to a local file.
+  *
+@@ -2227,6 +2265,17 @@ ssh_proxyjumps_free(struct ssh_list *proxy_jump_list)
+     }
+ }
+ 
++static bool force_openssh_proxy_jumps;
++
++/**
++ * @breif set use openssh proxy jumps without the OPENSSH_PROXYJUMP env var
++ */
++void
++ssh_use_openssh_proxy_jumps(int v)
++{
++    force_openssh_proxy_jumps = (v > 0);
++}
++
+ /**
+  * @brief Check if libssh proxy jumps is enabled
+  *
+@@ -2241,7 +2290,12 @@ ssh_libssh_proxy_jumps(void)
+ {
+     const char *t = getenv("OPENSSH_PROXYJUMP");
+ 
++    if (force_openssh_proxy_jumps)
++	    return false;
++
+     return !(t != NULL && t[0] == '1');
+ }
+ 
++
++
+ /** @} */
+diff --git a/src/options.c b/src/options.c
+index 785296dd..a82d4d81 100644
+--- a/src/options.c
++++ b/src/options.c
+@@ -251,6 +251,7 @@ int ssh_options_copy(ssh_session src, ssh_session *dest)
+     new->opts.gss_delegate_creds    = src->opts.gss_delegate_creds;
+     new->opts.flags                 = src->opts.flags;
+     new->opts.nodelay               = src->opts.nodelay;
++    new->opts.ccalgo                = src->opts.ccalgo;
+     new->opts.config_processed      = src->opts.config_processed;
+     new->opts.control_master        = src->opts.control_master;
+     new->common.log_verbosity       = src->common.log_verbosity;
+@@ -326,6 +327,9 @@ int ssh_options_set_algo(ssh_session session,
+  *              - SSH_OPTIONS_PORT_STR:
+  *                The port to connect to (const char *).
+  *
++ *              - SSH_OPTIONS_AI_FAMILY:
++ *                The address family for connecting (int *).
++ *
+  *              - SSH_OPTIONS_FD:
+  *                The file descriptor to use (socket_t).\n
+  *                \n
+@@ -571,6 +575,10 @@ int ssh_options_set_algo(ssh_session session,
+  *                Set it to disable Nagle's Algorithm (TCP_NODELAY) on the
+  *                session socket. (int, 0=false)
+  *
++ *              - SSH_OPTIONS_CCALGO
++ *                Set it to specify TCP congestion control algorithm on the
++ *                session socket (Linux only). (int, 0=false)
++ *
+  *              - SSH_OPTIONS_PROCESS_CONFIG
+  *                Set it to false to disable automatic processing of per-user
+  *                and system-wide OpenSSH configuration files. LibSSH
+@@ -727,6 +735,21 @@ int ssh_options_set(ssh_session session, enum ssh_options_e type,
+                 session->opts.port = i & 0xffffU;
+             }
+             break;
++        case SSH_OPTIONS_AI_FAMILY:
++            if (value == NULL) {
++                session->opts.ai_family = 0;
++                ssh_set_error_invalid(session);
++                return -1;
++            } else {
++                int *x = (int *) value;
++                if (*x < 0) {
++		    session->opts.ai_family = 0;
++                    ssh_set_error_invalid(session);
++                    return -1;
++                }
++                session->opts.ai_family = *x;
++            }
++            break;
+         case SSH_OPTIONS_FD:
+             if (value == NULL) {
+                 session->opts.fd = SSH_INVALID_SOCKET;
+@@ -1241,6 +1264,20 @@ int ssh_options_set(ssh_session session, enum ssh_options_e type,
+                 session->opts.nodelay = (*x & 0xff) > 0 ? 1 : 0;
+             }
+             break;
++	case SSH_OPTIONS_CCALGO:
++            v = value;
++            if (v == NULL || v[0] == '\0') {
++                ssh_set_error_invalid(session);
++                return -1;
++            } else {
++                SAFE_FREE(session->opts.ccalgo);
++                session->opts.ccalgo = strdup(v);
++                if (session->opts.ccalgo == NULL) {
++                    ssh_set_error_oom(session);
++                    return -1;
++                }
++            }
++            break;
+         case SSH_OPTIONS_PROCESS_CONFIG:
+             if (value == NULL) {
+                 ssh_set_error_invalid(session);
+diff --git a/src/session.c b/src/session.c
+index 9fd5d946..ed9f908e 100644
+--- a/src/session.c
++++ b/src/session.c
+@@ -107,9 +107,11 @@ ssh_session ssh_new(void)
+     /* OPTIONS */
+     session->opts.StrictHostKeyChecking = 1;
+     session->opts.port = 22;
++    session->opts.ai_family = 0;
+     session->opts.fd = -1;
+     session->opts.compressionlevel = 7;
+     session->opts.nodelay = 0;
++    session->opts.ccalgo = NULL;
+     session->opts.identities_only = false;
+     session->opts.control_master = SSH_CONTROL_MASTER_NO;
+ 
+diff --git a/src/sftp.c b/src/sftp.c
+index 37b4133b..12b6d296 100644
+--- a/src/sftp.c
++++ b/src/sftp.c
+@@ -1488,6 +1488,132 @@ ssize_t sftp_write(sftp_file file, const void *buf, size_t count) {
+   return -1; /* not reached */
+ }
+ 
++/*
++ * sftp_async_write is based on and sftp_async_write_end is copied from
++ * https://github.com/limes-datentechnik-gmbh/libssh
++ *
++ * sftp_async_write has some optimizations:
++ * - use ssh_buffer_new_size() to reduce realoc_buffer.
++ * - use ssh_buffer_add_func() to avoid memcpy from read buffer to ssh buffer.
++ */
++ssize_t sftp_async_write(sftp_file file, ssh_add_func f, size_t count, void *userdata,
++			 uint32_t* id) {
++  sftp_session sftp = file->sftp;
++  ssh_buffer buffer;
++  uint32_t buf_sz;
++  ssize_t actual;
++  int len;
++  int packetlen;
++  int rc;
++
++#define HEADROOM 16
++  /* sftp_packet_write() prepends a 5-bytes (uint32_t length and
++   * 1-byte type) header to the head of the payload by
++   * ssh_buffer_prepend_data(). Inserting headroom by
++   * ssh_buffer_new_size() eliminates memcpy for prepending the
++   * header.
++   */
++
++  buf_sz = (HEADROOM + /* for header */
++	    sizeof(uint32_t) + /* id */
++	    ssh_string_len(file->handle) + 4 + /* file->handle */
++	    sizeof(uint64_t) + /* file->offset */
++	    sizeof(uint32_t) + /* count */
++	    count); /* datastring */
++
++  buffer = ssh_buffer_new_size(buf_sz, HEADROOM);
++  if (buffer == NULL) {
++    ssh_set_error_oom(sftp->session);
++    return -1;
++  }
++
++  *id = sftp_get_new_id(file->sftp);
++
++  rc = ssh_buffer_pack(buffer,
++                       "dSqd",
++                       *id,
++                       file->handle,
++                       file->offset,
++                       count); /* len of datastring */
++
++  if (rc != SSH_OK){
++    ssh_set_error_oom(sftp->session);
++    ssh_buffer_free(buffer);
++    return SSH_ERROR;
++  }
++
++  actual = ssh_buffer_add_func(buffer, f, count, userdata);
++  if (actual < 0){
++    ssh_set_error_oom(sftp->session);
++    ssh_buffer_free(buffer);
++    return SSH_ERROR;
++  }
++
++  packetlen=ssh_buffer_get_len(buffer)+5;
++  len = sftp_packet_write(file->sftp, SSH_FXP_WRITE, buffer);
++  ssh_buffer_free(buffer);
++  if (len < 0) {
++    return SSH_ERROR;
++  } else  if (len != packetlen) {
++    ssh_set_error(sftp->session, SSH_FATAL,
++      "Could only send %d of %d bytes to remote host!", len, packetlen);
++    SSH_LOG(SSH_LOG_PACKET,
++        "Could not write as much data as expected");
++    return SSH_ERROR;
++  }
++
++  file->offset += actual;
++
++  return actual;
++}
++
++int sftp_async_write_end(sftp_file file, uint32_t id, int blocking) {
++  sftp_session sftp = file->sftp;
++  sftp_message msg = NULL;
++  sftp_status_message status;
++
++  msg = sftp_dequeue(sftp, id);
++  while (msg == NULL) {
++    if (!blocking && ssh_channel_poll(sftp->channel, 0) == 0) {
++      /* we cannot block */
++      return SSH_AGAIN;
++    }
++    if (sftp_read_and_dispatch(sftp) < 0) {
++      /* something nasty has happened */
++      return SSH_ERROR;
++    }
++    msg = sftp_dequeue(sftp, id);
++  }
++
++  switch (msg->packet_type) {
++    case SSH_FXP_STATUS:
++      status = parse_status_msg(msg);
++      sftp_message_free(msg);
++      if (status == NULL) {
++        return SSH_ERROR;
++      }
++      sftp_set_error(sftp, status->status);
++      switch (status->status) {
++        case SSH_FX_OK:
++          status_msg_free(status);
++          return SSH_OK;
++        default:
++          break;
++      }
++      ssh_set_error(sftp->session, SSH_REQUEST_DENIED,
++          "SFTP server: %s", status->errormsg);
++      status_msg_free(status);
++      return SSH_ERROR;
++    default:
++      ssh_set_error(sftp->session, SSH_FATAL,
++          "Received message %d during write!", msg->packet_type);
++      sftp_message_free(msg);
++      return SSH_ERROR;
++  }
++
++  return SSH_ERROR; /* not reached */
++}
++
+ /* Seek to a specific location in a file. */
+ int sftp_seek(sftp_file file, uint32_t new_offset) {
+   if (file == NULL) {

rpm/mscp.spec.in

@@ -38,6 +38,9 @@ make -C build install DESTDIR=%{buildroot}
 
 
 %changelog
+* Tue Aug 12 2025 Ryo Nakamura <upa@haeena.net> - 0.2.3-1
+- RPM release for v0.2.3
+
 * Wed Apr 16 2025 Ryo Nakamura <upa@haeena.net> - 0.2.2-1
 - RPM release for v0.2.2
 

scripts/test-in-container.sh

@@ -28,5 +28,11 @@ for port in 22 8022; do
 	ssh-keyscan -p $port ::1 >> ${HOME}/.ssh/known_hosts
 done
 
-# Run test
-python3 -m pytest -v ../test 
+
+if [ $# -gt 0 ]; then
+	# command arguments are passed, exec them
+	"$@"
+else
+	# no arguments passed, run the test
+	python3 -m pytest -v ../test
+fi

src/main.c

@@ -205,7 +205,7 @@ struct target *validate_targets(char **arg, int len)
 	 */
 
 	struct target *t, *t0;
-	int n;
+	int n, nslash;
 
 	if ((t = calloc(len, sizeof(struct target))) == NULL) {
 		pr_err("calloc: %s", strerrno());
@@ -223,9 +223,33 @@ struct target *validate_targets(char **arg, int len)
 		}
 	}
 
-	/* check all user@host are identical. t[len - 1] is destination,
-	 * so we need to check t[0] to t[len - 2] having the identical
-	 * remote notation */
+	/* expand remote path, e.g., empty dst path and '~' */
+	for (n = 0; n < len; n++) {
+		if (!t[n].host)
+			continue;
+
+		/* this target is a remote path. check the path and
+		 * expand it. this part is derived from
+		 * openssh-portal prepare_remote_path() function.
+		 */
+		char *path = t[n].path;
+		if (*path == '\0' || strcmp(path, "~") == 0)
+			t[n].path = strdup(".");
+		else if (strncmp(path, "~/", 2) == 0) {
+			if ((nslash = strspn(path + 2, "/")) == strlen(path + 2))
+				t[n].path = strdup(".");
+			else
+				t[n].path = strdup(path + 2 + nslash);
+		}
+		if (!t[n].path) {
+			pr_err("strdup failed: %s", strerrno());
+			goto free_target_out;
+		}
+	}
+
+	/* check all user@host are identical. t[len - 1] is the
+	 * destination, so we need to check t[0] to t[len - 2] having
+	 * the identical remote notation */
 	t0 = &t[0];
 	for (n = 1; n < len - 1; n++) {
 		if (compare_remote(t0, &t[n]) != 0)

src/mscp.c

@@ -275,6 +275,13 @@ struct mscp *mscp_init(struct mscp_opts *o, struct mscp_ssh_opts *s)
 	}
 	pr_notice("bitrate limit: %lu bps", o->bitrate);
 
+	/* workaround: set libssh using openssh proxyjump
+	 * https://gitlab.com/libssh/libssh-mirror/-/issues/319 */
+	ssh_use_openssh_proxy_jumps(1);
+
+	/* call ssh_init() because libssh is statically linked */
+	ssh_init();
+
 	return m;
 
 free_out:
@@ -322,10 +329,12 @@ int mscp_set_dst_path(struct mscp *m, const char *dst_path)
 		return -1;
 	}
 
-	if (!non_null_string(dst_path))
-		strncpy(m->dst_path, ".", 1);
-	else
-		strncpy(m->dst_path, dst_path, PATH_MAX);
+	if (!non_null_string(dst_path)) {
+		priv_set_errv("empty dst path");
+		return -1;
+	}
+
+	strncpy(m->dst_path, dst_path, PATH_MAX);
 
 	return 0;
 }
@@ -393,6 +402,9 @@ void *mscp_scan_thread(void *arg)
 	if (pool_size(m->src_pool) > 1)
 		a.dst_path_should_dir = true;
 
+	if (m->dst_path[strlen(m->dst_path) - 1] == '/')
+		a.dst_path_should_dir = true;
+
 	if (mscp_stat(m->dst_path, &ds, dst_sftp) == 0) {
 		if (S_ISDIR(ds.st_mode))
 			a.dst_path_is_dir = true;

src/path.c

@@ -410,46 +410,45 @@ static int copy_chunk_l2r(struct chunk *c, int fd, sftp_file sf, int nr_ahead, i
 	return 0;
 }
 
-static int copy_chunk_r2l(struct chunk *c, sftp_file sf, int fd, int nr_ahead, int buf_sz,
-			  struct bwlimit *bw, size_t *counter)
+static int copy_chunk_r2l(struct chunk *c, sftp_file sf, int fd,
+			   int nr_ahead, int buf_sz,
+			   struct bwlimit *bw, size_t *counter)
 {
-	ssize_t read_bytes, write_bytes, remaind, thrown;
+	ssize_t read_bytes, write_bytes, remain, thrown, len, requested;
+	sftp_aio reqs[nr_ahead];
 	char buf[buf_sz];
-	int idx;
-	struct {
-		int id;
-		ssize_t len;
-	} reqs[nr_ahead];
+	int i;
 
 	if (c->len == 0)
 		return 0;
 
-	remaind = thrown = c->len;
+	remain = thrown = c->len;
 
-	for (idx = 0; idx < nr_ahead && thrown > 0; idx++) {
-		reqs[idx].len = min(thrown, sizeof(buf));
-		reqs[idx].id = sftp_async_read_begin(sf, reqs[idx].len);
-		if (reqs[idx].id < 0) {
-			priv_set_errv("sftp_async_read_begin: %d",
+	for (i = 0; i < nr_ahead && thrown > 0; i++) {
+		len = min(thrown, sizeof(buf));
+		requested = sftp_aio_begin_read(sf, len, &reqs[i]);
+		if (requested == SSH_ERROR) {
+			priv_set_errv("sftp_aio_begin_read: %d",
 				      sftp_get_error(sf->sftp));
 			return -1;
 		}
-		thrown -= reqs[idx].len;
-		bwlimit_wait(bw, reqs[idx].len);
+		thrown -= requested;
+		bwlimit_wait(bw, requested);
 	}
 
-	for (idx = 0; remaind > 0; idx = (idx + 1) % nr_ahead) {
-		read_bytes = sftp_async_read(sf, buf, reqs[idx].len, reqs[idx].id);
+	for (i = 0; remain > 0; i = (i + 1) % nr_ahead) {
+		read_bytes = sftp_aio_wait_read(&reqs[i], buf, sizeof(buf));
 		if (read_bytes == SSH_ERROR) {
-			priv_set_errv("sftp_async_read: %d", sftp_get_error(sf->sftp));
+			priv_set_errv("sftp_aio_wait_read: %d",
+				      sftp_get_error(sf->sftp));
 			return -1;
 		}
 
 		if (thrown > 0) {
-			reqs[idx].len = min(thrown, sizeof(buf));
-			reqs[idx].id = sftp_async_read_begin(sf, reqs[idx].len);
-			thrown -= reqs[idx].len;
-			bwlimit_wait(bw, reqs[idx].len);
+			len = min(thrown, sizeof(buf));
+			requested = sftp_aio_begin_read(sf, len, &reqs[i]);
+			thrown -= requested;
+			bwlimit_wait(bw, requested);
 		}
 
 		write_bytes = write(fd, buf, read_bytes);
@@ -464,13 +463,13 @@ static int copy_chunk_r2l(struct chunk *c, sftp_file sf, int fd, int nr_ahead, i
 		}
 
 		*counter += write_bytes;
-		remaind -= read_bytes;
+		remain -= write_bytes;
 	}
 
-	if (remaind < 0) {
-		priv_set_errv("invalid remaind bytes %ld. last async_read bytes %ld. "
+	if (remain < 0) {
+		priv_set_errv("invalid remain bytes %ld. last async_read bytes %ld. "
 			      "last write bytes %ld",
-			      remaind, read_bytes, write_bytes);
+			      remain, read_bytes, write_bytes);
 		return -1;
 	}
 

src/ssh.c

@@ -117,23 +117,11 @@ static int ssh_authenticate(ssh_session ssh, struct mscp_ssh_opts *opts)
 	int auth_bit_mask;
 	int ret;
 
-	/* none method */
-	ret = ssh_userauth_none(ssh, NULL);
-	if (ret == SSH_AUTH_SUCCESS)
+	/* try publickey auth first */
+	char *p = opts->passphrase ? opts->passphrase : NULL;
+	if (ssh_userauth_publickey_auto(ssh, NULL, p) == SSH_AUTH_SUCCESS)
 		return 0;
 
-	auth_bit_mask = ssh_userauth_list(ssh, NULL);
-	if (auth_bit_mask & SSH_AUTH_METHOD_NONE &&
-	    ssh_userauth_none(ssh, NULL) == SSH_AUTH_SUCCESS)
-		return 0;
-
-	auth_bit_mask = ssh_userauth_list(ssh, NULL);
-	if (auth_bit_mask & SSH_AUTH_METHOD_PUBLICKEY) {
-		char *p = opts->passphrase ? opts->passphrase : NULL;
-		if (ssh_userauth_publickey_auto(ssh, NULL, p) == SSH_AUTH_SUCCESS)
-			return 0;
-	}
-
 	auth_bit_mask = ssh_userauth_list(ssh, NULL);
 	if (auth_bit_mask & SSH_AUTH_METHOD_PASSWORD) {
 		if (!opts->password) {

test/test_e2e.py

@@ -226,6 +226,62 @@ def test_copy_file_under_root_to_dir(mscp, src_prefix, dst_prefix):
     src.cleanup()
     dst.cleanup(preserve_dir = True)
 
+@pytest.mark.parametrize("src_prefix, dst_prefix", param_remote_prefix)
+def test_dst_has_suffix_slash(mscp, src_prefix, dst_prefix):
+    """
+    if dst path has suffix '/' like "dir/" and does not exist,
+    mscp should create dir/ and put dir/src-file-name.
+    """
+    dstdir = "non_existent_dstdir/"
+    shutil.rmtree(dstdir, ignore_errors=True)
+
+    src = File("src", size = 1024 * 1024).make()
+    dst = File(f"{dstdir}/src")
+
+    run2ok([mscp, "-vvv", src_prefix + src.path,
+            dst_prefix + dstdir])
+
+    assert check_same_md5sum(src, dst)
+    src.cleanup()
+    dst.cleanup()
+
+param_tilde_paths = [
+    ("src", "localhost:~/dst"),
+    ("localhost:~/src", "dst"),
+]
+@pytest.mark.parametrize("src_path, dst_path", param_tilde_paths)
+def test_remote_path_contains_tilde(mscp, src_path, dst_path):
+    """
+    if remote path contains '~' as prefix, it should be expanded as '.'.
+    Note that `~user` notation is not supported yet.
+    """
+    def extract_and_expand(path):
+        path = path if not ':' in path else path[path.index(':')+1:]
+        return path.replace('~', os.environ["HOME"])
+
+    src_f_path = extract_and_expand(src_path)
+    dst_f_path = extract_and_expand(dst_path)
+
+    src = File(src_f_path, size = 1024 * 1024).make()
+    dst = File(dst_f_path)
+
+    run2ok([mscp, "-vvv", src_path, dst_path])
+    assert check_same_md5sum(src, dst)
+
+    src.cleanup(preserve_dir=True)
+    dst.cleanup(preserve_dir=True)
+
+
+def test_remote_path_contains_tilde2(mscp):
+    src = File("src", size = 1024 * 1024).make()
+    dst = File(f"{os.environ['HOME']}/src")
+
+    run2ok([mscp, "-vvv", src.path, f"localhost:~"])
+    assert check_same_md5sum(src, dst)
+
+    src.cleanup(preserve_dir=True)
+    dst.cleanup(preserve_dir=True)
+
 
 @pytest.mark.parametrize("src_prefix, dst_prefix", param_remote_prefix)
 def test_min_chunk(mscp, src_prefix, dst_prefix):