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feat: add UNCOMPACT_CLI_AUTH_URL env override for local testing #566

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feat: add UNCOMPACT_CLI_AUTH_URL env override for local testing #566

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6 changes: 5 additions & 1 deletion cmd/auth.go
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Original file line number Diff line number Diff line change
Expand Up @@ -170,7 +170,11 @@ func authLoginBrowser(cfg *config.Config) (string, error) {
_ = server.Shutdown(ctx)
}()

dashURL := fmt.Sprintf("%s?port=%d&state=%s", config.DashboardCLIAuthURL, port, state)
cliAuthURL := config.DashboardCLIAuthURL
if override := os.Getenv("UNCOMPACT_CLI_AUTH_URL"); override != "" {
cliAuthURL = override
}
dashURL := fmt.Sprintf("%s?port=%d&state=%s", cliAuthURL, port, state)
Comment on lines +173 to +177

@coderabbitai coderabbitai Bot Mar 4, 2026

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⚠️ Potential issue | 🟡 Minor

🧩 Analysis chain

🏁 Script executed:

# First, let's check if cmd/auth.go exists and read the relevant section
find . -name "auth.go" -path "*/cmd/*" | head -5

Repository: supermodeltools/Uncompact

Length of output: 82

🏁 Script executed:

# Read the relevant section of cmd/auth.go around lines 173-177
sed -n '160,185p' ./cmd/auth.go

Repository: supermodeltools/Uncompact

Length of output: 911

🏁 Script executed:

# Let's see the function signature and return type
sed -n '1,180p' ./cmd/auth.go | grep -A 20 "^func.*getAuthURL\|^func.*Auth\|^func" | head -30

Repository: supermodeltools/Uncompact

Length of output: 943

🏁 Script executed:

# Let's find the function that contains the auth URL logic
sed -n '100,180p' ./cmd/auth.go | head -80

Repository: supermodeltools/Uncompact

Length of output: 2376

🏁 Script executed:

# Check the imports at the top of cmd/auth.go
head -30 ./cmd/auth.go

Repository: supermodeltools/Uncompact

Length of output: 593

🏁 Script executed:

# Let's verify the issue scenario mentioned in the review by checking what happens
# if someone sets an override URL that already has query params
python3 << 'EOF'
from urllib.parse import urlparse, parse_qs

# Simulate the current code behavior
port = 43210
state = "abcd1234"

test_cases = [
    ("http://localhost:3000/cli-auth/", "Normal case (no existing params)"),
    ("http://localhost:3000/cli-auth/?existing=value", "Edge case (has existing param)"),
]

print("=" * 70)
print("CURRENT CODE: fmt.Sprintf behavior")
print("=" * 70)

for override, desc in test_cases:
    # Current code does: fmt.Sprintf("%s?port=%d&state=%s", cliAuthURL, port, state)
    dashURL = f"{override}?port={port}&state={state}"
    parsed = urlparse(dashURL)
    
    print(f"\n{desc}")
    print(f"Override URL:  {override}")
    print(f"Result URL:    {dashURL}")
    print(f"Query string:  {parsed.query}")
    try:
        params = parse_qs(parsed.query)
        print(f"Parsed params: {params}")
    except Exception as e:
        print(f"ERROR parsing:  {e}")

print("\n" + "=" * 70)
print("WITH FIX: Using net/url Parse + Query().Set()")
print("=" * 70)

from urllib.parse import urlencode

for override, desc in test_cases:
    # Simulating the fixed code
    parsed = urlparse(override)
    params = parse_qs(parsed.query, keep_blank_values=True)
    
    # Add new params
    params['port'] = [str(port)]
    params['state'] = [state]
    
    # Rebuild query
    query_str = urlencode(params, doseq=True)
    fixed_url = f"{parsed.scheme}://{parsed.netloc}{parsed.path}?{query_str}"
    
    print(f"\n{desc}")
    print(f"Override URL:  {override}")
    print(f"Result URL:    {fixed_url}")
    print(f"Query string:  {query_str}")
    print(f"Parsed params: {params}")

EOF

Repository: supermodeltools/Uncompact

Length of output: 1570

🏁 Script executed:

# Let's also check if there are any tests for the auth login functionality
find . -name "*test*.go" -o -name "*_test.go" | xargs grep -l "authLoginBrowser\|UNCOMPACT_CLI_AUTH_URL" 2>/dev/null | head -5

Repository: supermodeltools/Uncompact

Length of output: 51

🏁 Script executed:

# Let's check the config to see what the default DashboardCLIAuthURL is
grep -n "DashboardCLIAuthURL" ./internal/config/config.go

Repository: supermodeltools/Uncompact

Length of output: 144

🏁 Script executed:

# Quick check: verify the fix would compile by checking if the function
# can actually handle the error cases properly
sed -n '119,130p' ./cmd/auth.go

Repository: supermodeltools/Uncompact

Length of output: 363

Use net/url to safely build the auth callback URL.

Nice feature! But there's a subtle URL-building issue on line 177. Right now, the code just concatenates the override URL directly with ?port=...&state=.... This works fine if the override is a simple URL like http://localhost:3000/cli-auth/, but if someone passes an override that already has query params—like http://localhost:3000/cli-auth/?existing=value—you end up with a malformed URL: http://localhost:3000/cli-auth/?existing=value?port=43210&state=abcd1234 (notice the double ?). That breaks the query parsing and kills the auth callback.

The fix is straightforward: use net/url.Parse() to safely merge query params, validate the scheme and host, and then encode. This way, existing params get properly combined with the new ones.

Suggested fix 
 import (
 	"context"
 	"crypto/rand"
 	"encoding/hex"
 	"fmt"
 	"net"
 	"net/http"
+	"net/url"
 	"os"
+	"strconv"
 	"strings"
 	"time"
@@
 	cliAuthURL := config.DashboardCLIAuthURL
 	if override := os.Getenv("UNCOMPACT_CLI_AUTH_URL"); override != "" {
 		cliAuthURL = override
 	}
-	dashURL := fmt.Sprintf("%s?port=%d&state=%s", cliAuthURL, port, state)
+	parsedURL, err := url.Parse(cliAuthURL)
+	if err != nil {
+		return "", fmt.Errorf("invalid UNCOMPACT_CLI_AUTH_URL: %w", err)
+	}
+	if parsedURL.Scheme != "http" && parsedURL.Scheme != "https" {
+		return "", fmt.Errorf("UNCOMPACT_CLI_AUTH_URL must use http or https")
+	}
+	if parsedURL.Host == "" {
+		return "", fmt.Errorf("UNCOMPACT_CLI_AUTH_URL must include a host")
+	}
+	q := parsedURL.Query()
+	q.Set("port", strconv.Itoa(port))
+	q.Set("state", state)
+	parsedURL.RawQuery = q.Encode()
+	dashURL := parsedURL.String()
🤖 Prompt for AI Agents 
Verify each finding against the current code and only fix it if needed.

In `@cmd/auth.go` around lines 173 - 177, The current construction of dashURL by
concatenating cliAuthURL with query params can break when the override
(UNCOMPACT_CLI_AUTH_URL) already contains query parameters; instead parse
cliAuthURL using net/url.Parse(), validate the parsed URL has a scheme and host,
then merge params by getting q := u.Query(), set q.Set("port", fmt.Sprint(port))
and q.Set("state", state), assign u.RawQuery = q.Encode(), and use u.String() as
dashURL; update the code references around cliAuthURL, override, dashURL, and
the UNCOMPACT_CLI_AUTH_URL handling to use this safe URL-building approach.

fmt.Println("Opening your browser to sign in...")
fmt.Printf(" %s\n\n", dashURL)
fmt.Println("Waiting for authentication (this will timeout in 2 minutes)...")
Expand Down