mirror of
https://github.com/nvm-sh/nvm.git
synced 2026-07-18 12:58:21 +08:00
Jordan Harband
9142a92cdc
`nvm_has` matches shell functions and aliases, but downloads now run via `command`, which skips them - a `curl` shell function with no curl binary on the PATH would select the curl path and fail with exit 127, instead of falling back to an available wget executable. The new `nvm_has_executable` helper resolves names the same way `command` does, so downloader selection and execution agree.
67 lines
2.0 KiB
Bash
Executable File
67 lines
2.0 KiB
Bash
Executable File
#!/bin/sh
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WORK="$PWD/shadowed-curl-work.$$"
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TEST_BIN="$WORK/bin"
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ARGV_LOG="$WORK/argv.log"
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cleanup () {
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unset -f die cleanup curl wget
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rm -rf "$WORK"
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export PATH="$OLDPATH"
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}
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die () { echo "$@" ; cleanup ; exit 1; }
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NVM_ENV=testing \. ../../../nvm.sh
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\. ../../common.sh
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OLDPATH="$PATH"
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# real-looking curl on PATH; calling the shadowing shell function below instead is a failure
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make_fake_curl "$TEST_BIN" ': > "$ARGV_LOG"
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for a in "$@"; do printf "%s\n" "$a" >> "$ARGV_LOG"; done'
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VERSION_MESSAGE="curl 7.99.0 (fake)
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Features: libz"
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export ARGV_LOG
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export PATH="$TEST_BIN:$OLDPATH"
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# shadowing shell functions, like aliases baked into a user's shell, must be
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# bypassed in favor of the executables on PATH (https://github.com/nvm-sh/nvm/issues/2923)
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curl() {
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echo 'curl 0.0.0-shadowed'
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return 1
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}
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wget() {
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return 1
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}
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[ "$(nvm_curl_version)" = '7.99.0' ] || die "nvm_curl_version used the shadowing curl function; got $(nvm_curl_version)"
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nvm_curl_libz_support || die 'nvm_curl_libz_support used the shadowing curl function'
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nvm_download -s 'http://example.com/' -o /dev/null || die 'nvm_download used the shadowing curl function and failed'
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grep -Fxq 'http://example.com/' "$ARGV_LOG" || die "nvm_download did not invoke the curl executable; got: $(cat "$ARGV_LOG")"
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# when no curl executable exists, a shadowing curl shell function must not fool
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# downloader selection: nvm_download must fall back to the wget executable
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WGET_ONLY_BIN="$WORK/wget-only-bin"
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mkdir -p "$WGET_ONLY_BIN"
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{
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echo '#!/bin/sh'
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echo ': > "$ARGV_LOG"'
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echo 'for a in "$@"; do printf "%s\n" "$a" >> "$ARGV_LOG"; done'
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} > "$WGET_ONLY_BIN/wget"
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chmod +x "$WGET_ONLY_BIN/wget"
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(
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PATH="$WGET_ONLY_BIN"
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export PATH
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nvm_download -s 'http://wget-fallback.example.com/' -o /dev/null
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) || die 'nvm_download did not fall back to wget when curl is only a shell function'
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grep -Fxq 'http://wget-fallback.example.com/' "$ARGV_LOG" || die "nvm_download did not invoke the wget executable; got: $(cat "$ARGV_LOG")"
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cleanup
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